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best HP boosters for your buck?!!!!

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Old Mar 30, 2014 | 04:30 PM
  #1  
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From: standish, ME
Car: 1989 pontiac firebird formula
Engine: 5.7 350 tpi
Transmission: 700r4 i think
best HP boosters for your buck?!!!!

hello all, I have an 89 formula and I'm looking for the best HP boosting aftermarket parts. I think I have to replace my fuel pump so I want to replace it with a high output pump, then I was hoping to put on a larger gauge throttle body and header back system. and a new intake. I already have a dual cat system but the guy I bought it from put the dual right back into the stock muffle so I'm also going to have full and true duals. I'm in college and she's my pride and joy so I'm just looking to see what y'all think of my plan. I want power of course and am looking to buy it as I can hopefully the exhaust first. any impute would be much appreciated. thanks all
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Old Mar 31, 2014 | 07:47 AM
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From: NE Pennsylvania
Car: 85 Iroc-Z
Engine: 383 TPI Procharger D1SC
Transmission: TKO600
Axle/Gears: Strange S60 3.73
Re: best HP boosters for your buck?!!!!

I agree. A full exhaust set up from the headers all the way back to the tips will give you a noticeable difference. If the rest of your car is still stock, I wouldn't go for the larger throttle body as it wouldn't be needed at your power level.
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Old Mar 31, 2014 | 07:58 AM
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Car: 1983 Z28
Engine: 385 Fastburn
Transmission: T-5
Axle/Gears: BorgWarner 9-bolt posi, 3.27 gears
Re: best HP boosters for your buck?!!!!

Finish filling out your profile so we can see specifics on your car.

I second the exhaust, and also wouldn't mess with the throttle body. Have you gutted your air box? Doing that plus a high flow filter (such as a K&N) would help the car breathe a little better.
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Old Apr 1, 2014 | 11:36 AM
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From: standish, ME
Car: 1989 pontiac firebird formula
Engine: 5.7 350 tpi
Transmission: 700r4 i think
Re: best HP boosters for your buck?!!!!

Originally Posted by RedLeader289
Finish filling out your profile so we can see specifics on your car.

I second the exhaust, and also wouldn't mess with the throttle body. Have you gutted your air box? Doing that plus a high flow filter (such as a K&N) would help the car breathe a little better.
I updated my info its all stock as far as I know and its been giving me a lot of trouble lately so im trying to first see what it will take to get it running right then map out a plan of parts to buy and install over the next year thanks for all yalls help
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Old Apr 1, 2014 | 04:09 PM
  #5  
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From: chicago
Car: 1991 Z28
Engine: 350 tpi
Transmission: auto/stock
Axle/Gears: stock
Re: best HP boosters for your buck?!!!!

put the dual back into the stock muffler?? so it's duals to a single muffler and Y's out? If so, that makes no sense!!

headers if ya have the money and enjoy knuckle busting or spend a lot of monies for someone else to do it.. I just slapped on 3" with a dcat all the way back to an 80 series flowmastah and it sounds delicious and a little but viscous.. not so much that it annoys.. it's literally just right.. maybe headers but even this change made a very noticeable difference.. car is breathing very nice now.. should boost the gas mileage too!

otherwise just dump the money into the heads and super charge it if you are a person with plenty of cash.. have fun!
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Old Apr 1, 2014 | 04:33 PM
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From: standish, ME
Car: 1989 pontiac firebird formula
Engine: 5.7 350 tpi
Transmission: 700r4 i think
Re: best HP boosters for your buck?!!!!

Yah i don't know why but right back into the stock muffler
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Old Apr 1, 2014 | 05:10 PM
  #7  
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From: chicago
Car: 1991 Z28
Engine: 350 tpi
Transmission: auto/stock
Axle/Gears: stock
Re: best HP boosters for your buck?!!!!

Originally Posted by Hlvo13
Yah i don't know why but right back into the stock muffler
maybe it was too loud?
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Old Apr 1, 2014 | 05:23 PM
  #8  
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From: standish, ME
Car: 1989 pontiac firebird formula
Engine: 5.7 350 tpi
Transmission: 700r4 i think
Re: best HP boosters for your buck?!!!!

Maybe haha I know I'm going to undo it though lol
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Old Apr 1, 2014 | 06:36 PM
  #9  
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From: Andover, MN
Car: 1989 Trans Am GTA
Engine: 5.7L TPI
Transmission: 700R4
Axle/Gears: Stock 9bolt posi
Re: best HP boosters for your buck?!!!!

75 shot of nitrous
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Old Apr 1, 2014 | 07:25 PM
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From: Indy
Car: 88 IROC-Z
Engine: GEN 4 LY6 (going forged 408)
Transmission: 60E (going RPM LEVEL 6 4L80E)
Axle/Gears: 7.5" 3.42 (staying...)
Re: best HP boosters for your buck?!!!!

So much [FAIL] in here...

smh
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Old Apr 1, 2014 | 07:26 PM
  #11  
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: best HP boosters for your buck?!!!!

best seat of the pants mod to really change the feel, a higher stall TC and a drive way drop in shift kit.

couple hrs in drive way with a friend. a big smile every time ya flash the TV to stall speed n chirp gears......

only mod ive ever done that really changed things.
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Old Apr 1, 2014 | 10:11 PM
  #12  
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From: chicago
Car: 1991 Z28
Engine: 350 tpi
Transmission: auto/stock
Axle/Gears: stock
Re: best HP boosters for your buck?!!!!

Originally Posted by no new tires
So much [FAIL] in here...

smh
yeah... oooooooooh k Gandolf the gear head.. we all bow down to your wisdom of car mods..
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Old Apr 2, 2014 | 01:17 AM
  #13  
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Car: Chevrolet Camaro Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23
Re: best HP boosters for your buck?!!!!

For my Little bros 91 RS we went with K&N filter,full exhaust, and from there worked on suspension since the old 305 can only go so far on a minimal budget ($700 total budget)
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Old Apr 2, 2014 | 05:28 AM
  #14  
Hlvo13's Avatar
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From: standish, ME
Car: 1989 pontiac firebird formula
Engine: 5.7 350 tpi
Transmission: 700r4 i think
Re: best HP boosters for your buck?!!!!

Originally Posted by Thizizkai
For my Little bros 91 RS we went with K&N filter,full exhaust, and from there worked on suspension since the old 305 can only go so far on a minimal budget ($700 total budget)
hmm never thought of that, mine has the ws6 suspension I wonder if it would be worth switching out.
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Old Apr 2, 2014 | 07:15 AM
  #15  
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From: Louisville, KY
Car: 1983 Z28
Engine: 385 Fastburn
Transmission: T-5
Axle/Gears: BorgWarner 9-bolt posi, 3.27 gears
Re: best HP boosters for your buck?!!!!

Originally Posted by Hlvo13
hmm never thought of that, mine has the ws6 suspension I wonder if it would be worth switching out.
If you have the ws6 package your suspension is already pretty good, maybe swapping out any rubber bushings for urethane ones would be a good idea, but the sway bars are already a good size.
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Old Apr 2, 2014 | 07:41 AM
  #16  
Hlvo13's Avatar
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From: standish, ME
Car: 1989 pontiac firebird formula
Engine: 5.7 350 tpi
Transmission: 700r4 i think
Re: best HP boosters for your buck?!!!!

Originally Posted by RedLeader289
If you have the ws6 package your suspension is already pretty good, maybe swapping out any rubber bushings for urethane ones would be a good idea, but the sway bars are already a good size.
yah I know it could probably use new bushings, its been through a ruff few years
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Old Apr 2, 2014 | 08:14 AM
  #17  
no new tires's Avatar
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From: Indy
Car: 88 IROC-Z
Engine: GEN 4 LY6 (going forged 408)
Transmission: 60E (going RPM LEVEL 6 4L80E)
Axle/Gears: 7.5" 3.42 (staying...)
Re: best HP boosters for your buck?!!!!

Originally Posted by vdoggie
yeah... oooooooooh k Gandolf the gear head.. we all bow down to your wisdom of car mods..
Did you even read half the junk listed.
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Old Apr 2, 2014 | 08:40 AM
  #18  
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Re: best HP boosters for your buck?!!!!

theres a lot of ways to boost hp...depends on how far you're willing to go. get air in and out faster will increase your HP basically. if you dont mind losing the LTR look, get an stealth ram, headers will increase the sound and hp of your car. better heads would be a great place to go too.
if you have budgeted just an exhaust job, and maybe a home made cool air intake with K&N filter, may i suggest too, a primo tune up. i never did that for my 87 (when it had the 305 TPI) and found that at nearly 165,xxx miles, it still had stock plugs, wires, cap and rotor. i definately gained some performance back from the motor after that
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Old Apr 2, 2014 | 10:07 AM
  #19  
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From: chicago
Car: 1991 Z28
Engine: 350 tpi
Transmission: auto/stock
Axle/Gears: stock
Re: best HP boosters for your buck?!!!!

Originally Posted by no new tires
Did you even read half the junk listed.
did you bother reading the OP? It's stock except the exhaust which was re-modified back.. so yeah I did read all the "junk" and all of it was acceptable.. I didn't see anything constructive suggestions from you other than a holier than tho attitude towards all the "junk" people suggested..
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