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Old 10-13-2009, 10:35 PM   #1
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Trying to convert into TPI

Alright, I have a tpi setup that I'm swapping out for my tbi and I'm going to put a new cam 224/234with new springs and valve spring kit, stock heads. Now I want to purchase a set of 1.6 RR's. I already have headers straight pipped flowmaster setup with a t-5 manual transmission. How much horespower do you guys think I can push out. Another thing what other parts can I actually use to do my convertion from my tbi setup, will I need new fuel lines throttle cable etc.. please help
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Old 10-13-2009, 10:59 PM   #2
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Re: Trying to convert into TPI

You should PM Dyno Don he has done many of those swaps
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Old 10-13-2009, 11:29 PM   #3
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Re: Trying to convert into TPI

Im thinking of doind atpi swap, but have never done a swap in a 3rd gen. Any info on what is required would be great . Id really like to know how complex it is
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Old 10-14-2009, 08:24 PM   #4
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Re: Trying to convert into TPI

cool thanks, I'll see what he says. thanks jr350
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Old 10-14-2009, 10:17 PM   #5
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Re: Trying to convert into TPI

He is located at OC you could go personaly i also was wanting to do this swap and he told me to take my car and he would of giving me an estimate but my car is not running right now. Do you already have the tpi or not i seen many people sell them right here
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Old 10-14-2009, 10:25 PM   #6
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Re: Trying to convert into TPI

Yeah, I got the TPI setup with the wiring harness, ECM, intake manifold and the MAF. What I'm wondering is if I need to replace the throttle cable and the fuel lines.
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Old 10-14-2009, 11:22 PM   #7
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Re: Trying to convert into TPI

i had a tbi motor converted to carb and now i want to to go tpi what all do i need can anybody tell me what i need and is it worth it
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Old 10-14-2009, 11:29 PM   #8
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Re: Trying to convert into TPI

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Yeah, I got the TPI setup with the wiring harness, ECM, intake manifold and the MAF. What I'm wondering is if I need to replace the throttle cable and the fuel lines.
Yea your gonna need some for a tpi because they are different lentghs
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Old 10-14-2009, 11:37 PM   #9
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Re: Trying to convert into TPI

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i had a tbi motor converted to carb and now i want to to go tpi what all do i need can anybody tell me what i need and is it worth it
From what i heard you either need a wiring harness for your year of the car or repin your tbi harness for a tpi, the tpi system, ecm, custom ship and the sensors, also a fuel pump, and few other things. It is worth it depending on for what you want it for a dd i say it is because of the torque it gives and gives better mpg than carb and tbi, thats what i think but everybody thinks different.
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Old 10-14-2009, 11:50 PM   #10
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Re: Trying to convert into TPI

Yeah I would say the same, more efficient.
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Old 12-30-2009, 09:40 PM   #11
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Re: Trying to convert into TPI

anybody?
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Old 12-30-2009, 09:42 PM   #12
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Re: Trying to convert into TPI

did you ever pm dyno don
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Old 12-30-2009, 10:16 PM   #13
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Re: Trying to convert into TPI

yeah but he wants me to go in and see him, I just need guidance on how to install it myself. I kinda feel that he wants to do the conversion. It's just something I want put together on my own but just wanted to see if anyone has ever done this conversion and maybe just give some tips. I mean it shouldn't be hard to do but I just want to hear it from other people that have done it to see if I'm OK so I can feel confident on what I'm doing. I got all the parts it's a MAF TPI setup intake bolts right up got the runners, plenum, wiring harness, throttle body, ECM, injectors, new fuel pump, intake manifold, new cam, lifters and about to get my rockers but I might just pull the engine out so I can do a overhaul with forged pistons and new oil pump that way I wont have any problems after I slap the TPI setup. Another thing I want to get is all the TPI parts port and polished IDK just looking for suggestions and on what to do and to see if anyone has done this convertion just to see if im ok.
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Old 12-31-2009, 12:08 AM   #14
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Re: Trying to convert into TPI

pm birdtojag then he was gonna guide me on installing a tpi on my camaro but the harness i had would not work on my camaro so i didn't do the swap
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Old 12-31-2009, 12:20 AM   #15
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Re: Trying to convert into TPI

Cool, thanks JR350tpi
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Old 12-31-2009, 01:04 AM   #16
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Re: Trying to convert into TPI

yea for sure hope you could do it i am still looking for the harness and ecm i need and trying to sell mine
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Old 12-31-2009, 01:08 AM   #17
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Re: Trying to convert into TPI

Just search for them, luckily I got everything all together but will see. I PM him hopefully he replies back.
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Old 12-31-2009, 01:16 AM   #18
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Re: Trying to convert into TPI

Here is a pic of how my car is sitting now and some of the parts I got. I want to get them parts port and polished if possible also.
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Old 12-31-2009, 01:19 AM   #19
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Re: Trying to convert into TPI

You should polish your plenum and the runners like i did heres some pics of mine http://www.thirdgen.org/techboard/en...-tpi-gone.html that i am trying to sell to just stay with tbi if i cant convert my car
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Old 12-31-2009, 01:21 AM   #20
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Re: Trying to convert into TPI

I seeing them all together but they are asking over $300 and i bought my L98 for $400 with the tpi all complete and all it needed was the valve cover gasket
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Old 12-31-2009, 01:24 AM   #21
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Re: Trying to convert into TPI

here's some more pics
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Old 12-31-2009, 01:35 AM   #22
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Re: Trying to convert into TPI

what is it that your missing on your setup, looks clean and where did you get that work done and for how much?
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Old 12-31-2009, 02:38 AM   #23
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Re: Trying to convert into TPI

anybody with any type of input please reply
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Old 12-31-2009, 01:37 PM   #24
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Re: Trying to convert into TPI

I offered to help guide you I didn't offer to do the job. My info was offered with no strings attached.
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Old 12-31-2009, 01:50 PM   #25
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Re: Trying to convert into TPI

Alright, thanks I just kind of thought you wanted to do the job, but if you got any guidance for me I would really appreciate it. Dyno Dan
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Old 12-31-2009, 02:23 PM   #26
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Re: Trying to convert into TPI

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I got all the parts it's a MAF TPI setup intake bolts right up got the runners, plenum, wiring harness, throttle body, ECM, injectors, new fuel pump, intake manifold, new cam, lifters and about to get my rockers
do you have the right PROM? fuel lines? and your gonna need a new throttle cable. do a search or look in the engine swap thread.

good luck.
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Old 12-31-2009, 02:29 PM   #27
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Re: Trying to convert into TPI

Both the throttle cable and the kick down cable will need to be replaced the tbi ones are too short. The fuel lines from the tank won't need to be replaced but make sure you get the flex lines that connect to the fuel rail.
You will need to change the fuel pump as well.
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Old 12-31-2009, 02:29 PM   #28
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Re: Trying to convert into TPI

Yeah, everything I need I got fuel lines I got a piggy back just to extend the lines and the prom I'm just getting an aftermarket one
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Old 12-31-2009, 10:54 PM   #29
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Re: Trying to convert into TPI

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what is it that your missing on your setup, looks clean and where did you get that work done and for how much?
I aint missing nothing but its that i can't put the tpi that i have because its a MAF and i want Speed Density for my car, as of how it looks i did that myself just search plenum polish and it tells you exactly what i did but it does take a long time i just went through it fast if i would have taken my time it would of come out better.
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Old 12-31-2009, 11:29 PM   #30
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Re: Trying to convert into TPI

alright
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Old 12-31-2009, 11:34 PM   #31
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Re: Trying to convert into TPI

so nobody has a step by step on how to install the TPI system? damn that sucks Ima get this complete and post it up for other peoples future reference.
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Old 01-01-2010, 03:57 AM   #32
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Re: Trying to convert into TPI

yea hopefully you get this done also if you don't mind when you are gonna do the swap if i can go see you do it i see you live in south gate
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Old 01-01-2010, 04:58 AM   #33
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Re: Trying to convert into TPI

yeah, no problem
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Old 01-01-2010, 05:08 AM   #34
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Re: Trying to convert into TPI

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so nobody has a step by step on how to install the TPI system? damn that sucks Ima get this complete and post it up for other peoples future reference.
You really don't need a step-by-step. Once you have your heads done it just a reverse of doing a short block for the TPI.
The manual for the donor model will have the instructions, but if you really need some guidance visit this site http://www.chevythunder.com/

I would suggest removing the engine so you can do a clean install of all the changes required such as harness, fuel lines etc. You'll also need the dual fan setup. I also suggest installing the TPI harness instead of repining. Do the engine on a stand and install when completed with the tranny attached. Remember these are just suggestions

You said stock heads - TPI, or the TBI heads?
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Old 01-01-2010, 12:37 PM   #35
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Re: Trying to convert into TPI

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You really don't need a step-by-step. Once you have your heads done it just a reverse of doing a short block for the TPI.
The manual for the donor model will have the instructions, but if you really need some guidance visit this site http://www.chevythunder.com/

I would suggest removing the engine so you can do a clean install of all the changes required such as harness, fuel lines etc. You'll also need the dual fan setup. I also suggest installing the TPI harness instead of repining. Do the engine on a stand and install when completed with the tranny attached. Remember these are just suggestions

You said stock heads - TPI, or the TBI heads?
thanks Rgarcia and as far as the engine being pulled out, I am going to do that I also geting a forged piston rebuilt kit along with a mild cam( 224/234 )I've got to go with it. I also got a valve train kit with that already but I will need some new RR.
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Old 01-01-2010, 12:38 PM   #36
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Re: Trying to convert into TPI

casting # on heads are 14102187
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Old 01-01-2010, 02:16 PM   #37
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Re: Trying to convert into TPI

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casting # on heads are 14102187
Casting #14102187 is 305HO, 87-91, 1.85-1.5, 58cc, 7 bolt ex.

From the TGO home page Camaro Tech data, the highest rating for 87-91 LB9(TPI) is 230hp that's for the 91'. I think I read somewhere that the engines were under rated, but it's flywheel HP/TQ.

My HP goal for my 388 TPI was 1, or more HP per CI. I haven't dynoed it yet so I don't know.
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Old 01-02-2010, 01:00 PM   #38
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Re: Trying to convert into TPI

awesome, good luck on that and thanks for the info
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Old 02-02-2010, 09:12 PM   #39
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Re: Trying to convert into TPI

Did you ever do the swap
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Old 06-26-2010, 08:45 PM   #40
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Re: Trying to convert into TPI

it's in progress should be done by next week, just got my heads back from the machine shop. did a full port and polish with runners plenum and intake all match new cam (Camshaft, Hydraulic Roller Tappet, Advertised Duration 258/264, Lift .480/.487, Chevy, Small Block, Each) new roller comp lifters, push rods, springs and retainers over size bore .020 so it's a 308 now 10:1 compression stage 2 prom hyper chip. just need to purchase my throttle cable,speedo cable and power steering presure hose and should be rumbling in no time check out the link on the signature thats my buddies forum. I should be posting up my intake manifold soon as well *** runners plenum and intake just need to polish the outside of the intake runners and plenum http://acuitzeramo.com/portfl0w/foru...hread.php?t=11
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Last edited by johnny090881; 06-26-2010 at 08:48 PM. Reason: forgot to input some stuff
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Old 06-26-2010, 08:57 PM   #41
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Re: Trying to convert into TPI

here's a couple other pics
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Old 06-26-2010, 09:04 PM   #42
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Re: Trying to convert into TPI

The cam youre looking at seems big for stock heads. PM Atilla the fun and ask him what he thinks. He seems to be the cyl head guru here.
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87 IROC Z28, 355 TPI, 10.2:1, 6" rods, bal @ 6K, TFS G2 heads full port, ZZX Cam, Superram Base ported huge, large tube runners, 1 3/4 pri coated stainless short tube, 58mmTB on ported plenum, ram air, high flow air lid, 24lb bosch @ 70 psi, ACCEL DFI, MSD D6, functional hood louvers, and much more. SSM SFCs, Hotchkis rear links& strut tower brace, Eibach Sportline coils, Koni Red S&S, PST bushings, Ed's 13" w/WW 4 piston calipers in front, LS1s in back. GTA seats, MOMO wheel, B&M Megashifter
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Old 06-26-2010, 09:06 PM   #43
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Re: Trying to convert into TPI

Sorry, didnt read far enough. Full porting, good.
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87 IROC Z28, 355 TPI, 10.2:1, 6" rods, bal @ 6K, TFS G2 heads full port, ZZX Cam, Superram Base ported huge, large tube runners, 1 3/4 pri coated stainless short tube, 58mmTB on ported plenum, ram air, high flow air lid, 24lb bosch @ 70 psi, ACCEL DFI, MSD D6, functional hood louvers, and much more. SSM SFCs, Hotchkis rear links& strut tower brace, Eibach Sportline coils, Koni Red S&S, PST bushings, Ed's 13" w/WW 4 piston calipers in front, LS1s in back. GTA seats, MOMO wheel, B&M Megashifter
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Old 06-26-2010, 09:20 PM   #44
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Re: Trying to convert into TPI

haha, yeah full porting
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305 build in progress, Camshaft, Hydraulic Roller Tappet, Advertised Duration 258/264, Lift .480/.487, Chevy, Small Block, Each full port on heads intake manifold plenium match and runners stock valves so far check it out
http://acuitzeramo.com/portfl0w/foru...hread.php?t=11
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Old 06-27-2010, 08:41 PM   #45
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Re: Trying to convert into TPI

here's a few pics of the plenum and runners after a quick sand down and polish, not the greatest but I would say 100x better then what it was
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File Type: jpg IMG_0816.JPG (781.1 KB, 5 views)
File Type: jpg IMG_0819.JPG (622.6 KB, 3 views)
File Type: jpg IMG_0824.JPG (585.1 KB, 6 views)
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Old 06-27-2010, 08:48 PM   #46
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Re: Trying to convert into TPI

here's a pic of the before should be getting intake manifold in a couple of weeks, it's at the machine shope getting ported to match the heads
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Old 06-27-2010, 08:53 PM   #47
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Re: Trying to convert into TPI

Awsome man once your done then i may ask you to help me out once i find the harness and ecm since the ones i find are either sold or are over $400 just for the ecm and harness. How much did they charge you to port the heads and intake.
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Old 06-27-2010, 09:06 PM   #48
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Re: Trying to convert into TPI

They charged me $450 to port and polish but I supplied all the other parts springs retainers valves
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305 build in progress, Camshaft, Hydraulic Roller Tappet, Advertised Duration 258/264, Lift .480/.487, Chevy, Small Block, Each full port on heads intake manifold plenium match and runners stock valves so far check it out
http://acuitzeramo.com/portfl0w/foru...hread.php?t=11
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