what size injectors with mods
Thread Starter
Staging Lane
Joined: May 2005
Posts: 68
Likes: 0
From: Vevay,IN
what size injectors with mods I have an 02 camaro with ls6 heads some port work, 221/221 .558 cam, headers, ls1 edit, ported throttle body, kn filter kit, no cats, flowmaster exhaust, dr. evil trans w/ 3200 vigilante converter, what injector do i need i think stock ones are 28lbs?
Originally Posted by aux_fast_cam
I have an 02 camaro with ls6 heads some port work, 221/221 .558 cam, headers, ls1 edit, ported throttle body, kn filter kit, no cats, flowmaster exhaust, dr. evil trans w/ 3200 vigilante converter, what injector do i need i think stock ones are 28lbs?
I bet you could run on stock ones. If not 30 would be more then enough.
Didn't the tuner know from ls1 edit know if you needed bigger injectors?
Thread Starter
Staging Lane
Joined: May 2005
Posts: 68
Likes: 0
From: Vevay,IN
Originally Posted by jermzz
I bet you could run on stock ones. If not 30 would be more then enough.
Didn't the tuner know from ls1 edit know if you needed bigger injectors?
Didn't the tuner know from ls1 edit know if you needed bigger injectors?
I've got it installed on my pc, just didn't know how much stock injectors were good for.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
On F-bodies the FPR (fuel pressure regulator) is in the back by the tank.
A common misconception is that during dyno tuning, poeple see that injectors are close to max cycle. So they automaticaly assume they need bigger injectors.
Something often overlooked is to check fuel pressure at rail with a guage during WOT dyno runs. If they did so, they would notice that injectors seem maxed out but that is because the pressure is not at it's optimum 58 psi.
The cure for that is a FPR at the rail to adjust pressure to 58 psi @ WOT, therefore allowing the injectors more fuel to reach their true capacity.
A common misconception is that during dyno tuning, poeple see that injectors are close to max cycle. So they automaticaly assume they need bigger injectors.
Something often overlooked is to check fuel pressure at rail with a guage during WOT dyno runs. If they did so, they would notice that injectors seem maxed out but that is because the pressure is not at it's optimum 58 psi.
The cure for that is a FPR at the rail to adjust pressure to 58 psi @ WOT, therefore allowing the injectors more fuel to reach their true capacity.
well put. but with my cam and bolt on's we ran into the same problem and instead of putting a FPR up front, I was told by the shop doing all of the work that it needed bigger injectors. but now I do have a FPR up front and never have to worry
This implies the need to upgrade your fuel pump at even moderate hp levels, correct?
Is the in-tank regulator disabled/eliminated in this arrangement?
Isn't the LS1 F-body fuel system returnless? If so, how do you integrate a regulator at the fuel rail; convert to a return type fuel system and regulate that side? Would you use the evap line for return, or original fuel for return and run a new pressure line?
I'm finessing out my fuel system readying for the install of a lunati 383, fwiw.
tia,
Tony
Is the in-tank regulator disabled/eliminated in this arrangement?
Isn't the LS1 F-body fuel system returnless? If so, how do you integrate a regulator at the fuel rail; convert to a return type fuel system and regulate that side? Would you use the evap line for return, or original fuel for return and run a new pressure line?
I'm finessing out my fuel system readying for the install of a lunati 383, fwiw.
tia,
Tony
Trending Topics
If running a FRM FPR then yes, the stock in-tank regulator is eliminated. The F-Body fuel system is "return less" as the return to the tank happens back in the T fitting. There are a few options for the FRM FPR. One would be to run a return line back to the T fitting. Another would be to use the vapor line as the return and do a little plumbing back at the T to tie it all together.
Matt
Matt
Originally Posted by Tony99SS
This implies the need to upgrade your fuel pump at even moderate hp levels, correct?
Is the in-tank regulator disabled/eliminated in this arrangement?
Isn't the LS1 F-body fuel system returnless? If so, how do you integrate a regulator at the fuel rail; convert to a return type fuel system and regulate that side? Would you use the evap line for return, or original fuel for return and run a new pressure line?
I'm finessing out my fuel system readying for the install of a lunati 383, fwiw.
tia,
Tony
Is the in-tank regulator disabled/eliminated in this arrangement?
Isn't the LS1 F-body fuel system returnless? If so, how do you integrate a regulator at the fuel rail; convert to a return type fuel system and regulate that side? Would you use the evap line for return, or original fuel for return and run a new pressure line?
I'm finessing out my fuel system readying for the install of a lunati 383, fwiw.
tia,
Tony
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
