Hey I have never even driven a car with TPI on it. My car has TBI but I was thinking about switching over. I am sure there probably has been many threads about this but I would like some opinions to whether or not it is worth the headache and extra power. Or should I do something completely different. Thanks.

 

looks like you doing quite good, with what you got now..

stock tpi makes good low end torque but run out of power at about 4,500 rpm..

good gas mileage though.

 

You think maybe a 4-barrel TBI system is better than TPI then?

 

First off, I hate to inform you you are not making anywhere near 300 HP with Two 61# Injectors.

But that is besides the point. Port injection is better then Throttle body injection for tons of reasons. Our particular port injection ( TPI ) is limited in its stock form, but that is Easily taken care of by the aftermarket.

THis Thread is probrably going to get ugly because some retard is going to try to profess the virtues of TBI, but the fact is there are no fast TBI cars.

4bbl Tbi would be a little better, but your guys' ECM's can't push 4 injectors without the addition of additional Drivers, So thats sorta a moot Point.

If you ever aspire of Being faster than 14's, You need to ditch the TBI, Weather you go Carb or TPI or Aftermarket Multipoint or whatever the hell you want is Up to you, but the TBI Won't Cut it.

Yes, switching to TPI Will be worth it and is probrably the Best Option for a street Car, especially if you use aftermarket Parts.

Switching to Carb would be a real Backwards step for a street Car. Might as well Throw some Bias Ply Tires on there while your at it, and Chuck that overdrive Tranny, too.

 

Ok look, first of all I am gonna disregard your info all together because you come across to me as a bit abrasive to say the least. I was just asking a simple question and didn't expect to have to defend my setup. I don't think you should limit yourself to one setup and not question the other setups. There are a lot of 4 Barrel TBI setups out there with their own computer and pushing over 900 CFM. What does the average TPI setup push? Don't know just asking. I was just wondering if one is quiet a bit better than the other and if it is worth the hassle. You have no idea what you are talking about when you look at the numbers I posted and try to guess what kind of horsepower my car is putting out. The 300 HP this engine puts out is rated at the flywheel not the rear tires. Big difference there! I am not gonna argue with you about this if you want to argue about this motor you can contact Scoggin Dickey Chevrolet and ask about their TBI Performance motors. I have obviously hit a sore spot somehow with you and I had no intentions of doing so. From the looks of your sig you must take great pride in beating up on 5.0 TBI 180HP cars. That isn't too hard. I thought the natural enemy was a mustang but I guess I could be mistaken huh. Move along now.

 

so 300 Horses to the fly with a generous 20% loss in drivetrain = estimated 240 RWHP... not too shabby for a TBI unit if I say so.

I think you should stay TBI (ducks and doges from fruit thrown at him)

Number one: It's badass that you have a fast TBI
Number two: TBI is very easy to tune, TPI is a pain in the ***.
Number Three: You already got it and it's all there and nice and done already.

I say keep modding, but leave the TBI. Heads and a Good cam instead of a TPI swap in would make more sense to me.

 

Hardly.


Whatever floats your boat, use it. If you like TBI, keep it. If you feel like fooling with an entire injection system swap, then TPI (in some form) would be a good way to go. Lots of documentation here on how to do that swap too.

 

I don't care if you have a Topfuel Motor Under it, Two 61# Injectors do not supply enough fuel for 300 Horsepower. Its a Fact.

Another Fact: There are NO fast 2bbl TBI cars. 2 90# Injectors, wich are the largest you can get, at 100% Duty Cycle, Can barely support 300 hp... There simply are not injectors big enough to deliver the nessicary fuel, if you Swapped to an aftermarket 4bbl TBI Then sure... But Show me the 4bbl TBI cars Running 12's or faster... Go ahead, Show me...

Those Systems, like the Holley Projection, Are not designed for performance. They are designed for ease of install and the "cool" Factor for streetrods and the like. If You want one Ive got one I can sell ya.

So if you feel like running faster than Low 14's... Then Your going to have to Ditch the TBI Sooner or Later.

Disregard it if you want, its up to you.

What Kinda 1/4 Do you get outta your big bad 300 HP TBI motor anyway ?

 

Bort man, why are you being such an ***? Jeez, I'd ignore you too =P

 

If the Simple facts Make me an ***, Then Im happy to be one all day long.

This Guy asked, I gave him a factual answer. If its not what he wanted to hear then He shouldnt have asked in the first place.

Bunch of fu(king pansies on this board I swear.

 

Sounds to me like you are pulling facts from somewhere that I am not interested in. Your creditablity has hit the dirt with me much like your awe inspired TPI car would at the track. I don't have time to give you schooling lessons on who's car runs what there are plenty of threads on guys running fast in the 1/4 on this site. You do your own homework if you wanna see or be shown something as I will mine on this subject from here on out. Not enough gas...please, there are a ton of factors that go into getting a car from point A to point B quickly. I am not saying TBI is the best out there, I'm not even bragging on TBI. YOU are the retard, that you brought up earlier in this thread, that is trying to profess the virtues of a particular system. I did not intend on starting an argument and I am not going to add anymore fuel to this subject from here on out. I think it is in my best interest that I ignore you and refrain from conferring with you anymore due to the fact that I may start to dislike you to the point that I say something that I shouldn't. I think you need a lesson in tact. You don't have to be an A**hole to get your point across. Good luck with your TPI and thanks for wishing me luck with my TBI.

 

Lmao!

My Car is Carbed, BTW.

Whats your Car run in the 1/4 again ? lol

Lots of "300 hp" TBI car's in the 15's these days...

Jprevost ran a 13.8 with his built TBI 350... is that your example of a Fast car? I hope not lol.

He is the fastest NA TBI car That I know of to Date... Please Show me otherwise.



Where are the 12 Second NA TBI Timeslips? Oh yeah... they Don't exist! hahahaa

 

I think a 454 SS motor out of the GM trucks transplanted into an F-body would fit the bill quite nicely!

 

I doubt it, actually.

Those trucks arent very fast...

 

Neither were the land barge cadillacs with the 5XX motors, but the Chevette that Hot Rod planted the Caddy motor into ran 11's I believe. See where I am going with this?

 

IM GONNA STRAP A FREAKIN RAMJET 502 TO MY JOHN DEER AND BLOW ALL THE **** FROM THIS CONTEST ALL THE HELL OVER THIS MUTHAF*CKA

 

FYI, its in your presentation of the "simple facts" but it is none of my business. Only reason why I say anything at all is because I've had run-in's with you too.

On topic, I say: 300hp? OK, sounds good. If it ain't broke, don't fix it.

 

You'll get your lawn mowed in a hurry...well... after you "blow all the **** from this contest".

Everyday I wonder if public education HAS gotten worse, and then every once in awhile, I get my update.

 

if you really want an update on the quality of the public schooling system, you're gay and your mom is fat, i think you'll find not much has changed

 

Thats a pretty Healthy signature there Bucko...

If your Happy with what you got, then leave it.

But One would gather, from his asking of the question in the first place, that He was lookig for more. He's gonna be pretty dissapointed if he trys to find it with TPI.

Swapping a Lo-po BBC into a 3500 + extra weight of the big block Thirdgen is a little differant than swapping a 500" Caddy motor into a 2500 lb Chevette.

But Im sure you could run 12's w/ said motor in a purpose build Stripped Thirdgen. But thats not really the point is it ?

 

That was almost a sentence. You are almost there.
The mods are gonna love you...

 

Wooosh.

The Sound Of that Comment, Flying Inches Right over Rockind's Head.

Lol

 

lol, well i think by his last post we can clearly see that most of HIS time in public school was spent forking over his milk money, but at least he did take something away from his time there "I'M TEELLLIIINNNGGGGGG"

 

touche...didn't even notice 'till I looked again.


Probably shoudln't be reading these posts while trying to do stats homework. By the way.. which school do you go to Butkus?

Oh, and to keep this tech related, I would stick with TBI. I don't think a swap to a stock type TPI would make a huge difference.

 

Hey I thought this place was about sharing knowlege about the cars we love most; and in doing so, advancing the sport. Not bickering like a bunch of school girls. Now, iroczrockz in regaurds to your question, I think we can all agree that TBI is not the most potent fuel injection setup, right? So if you're looking for a swap, TPI is a feasable solution, but I don't think piecing together a stock system is worth the trouble. You might want to consiter a Stealthram or Miniram perhapse, they don't have the same shortcomings as the stock TPI and I'd bet you'de have a hard time puting together a TPI system for less than a Stealthram. I hope this helps.