fuel pressure suggestions plz
09-15-2011, 02:10 PM
#1
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Car: Red 91 RS Camaro
Engine: LO3 with Comp Cam
Transmission: 700R4
Axle/Gears: 4th gen rear
fuel pressure suggestions plz
I have rebuild my camaro again and did quite a bit more engine mods than previous and need some recomendations on what PSI to run the fuel pressure at. Ill give you as much info on the motor that I can remember..
305 bored 30 over with flat top pistons.
081 heads with mild port and polish and gasket matched
comp cams 1.52 ratio RR with matching pushrods
Cam
Duration at 050 inch Lift
206 int./212 exh.
Advertised Duration
258 int./264 exh.
Valve Lift with Factory Rocker Arm Ratio
0.480 int./0.488 exh.
Lobe Separation (degrees)
112
Weiand 7525 intake manifold with EGR blocked off and TBI adaptor plate
ultimate TBI mods
open element
2055 hooker headers, no cat and full 3" catback
timing is up around 10 or 12 degrees base timing
Acel shorty header plugs
acel cap and rotor with 8.8mm wires
TPI fuel pump
stock tbi injectors
93 octane fuel
Im running the fuel pressure around 14psi. I have the adjustable regulator and several springs to get it just right. I will be getting the EBL soon but in the mean time i need some help from people with similar setups. thanks
305 bored 30 over with flat top pistons.
081 heads with mild port and polish and gasket matched
comp cams 1.52 ratio RR with matching pushrods
Cam
Duration at 050 inch Lift
206 int./212 exh.
Advertised Duration
258 int./264 exh.
Valve Lift with Factory Rocker Arm Ratio
0.480 int./0.488 exh.
Lobe Separation (degrees)
112
Weiand 7525 intake manifold with EGR blocked off and TBI adaptor plate
ultimate TBI mods
open element
2055 hooker headers, no cat and full 3" catback
timing is up around 10 or 12 degrees base timing
Acel shorty header plugs
acel cap and rotor with 8.8mm wires
TPI fuel pump
stock tbi injectors
93 octane fuel
Im running the fuel pressure around 14psi. I have the adjustable regulator and several springs to get it just right. I will be getting the EBL soon but in the mean time i need some help from people with similar setups. thanks
Last edited by iggy1991; 09-15-2011 at 07:09 PM.
09-15-2011, 06:35 PM
#3
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Re: fuel pressure suggestions plz
the egr needs to be disabled in the computer also does it not?
09-15-2011, 06:57 PM
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Re: fuel pressure suggestions plz
yes the egr does need to be deleted. your prolly going to need 350 injectors. call or email brian at tbi chips and talk to him. he can burn a good chip to get you going. he has done plenty of swapd such as this to.
09-15-2011, 07:01 PM
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Car: Red 91 RS Camaro
Engine: LO3 with Comp Cam
Transmission: 700R4
Axle/Gears: 4th gen rear
Re: fuel pressure suggestions plz
I also have a chip installed from TBIchips from a good 5 years ago. The egr will be disabled when I start tuning. It just doesnt fit unless I use the TB spacer and then the TBI wont fit under the hood! What are other people running their FP at?
09-15-2011, 07:52 PM
#6
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Transmission: gone
Axle/Gears: gone
Re: fuel pressure suggestions plz
im somehwere betwen 10-20 lol. im having issues.
09-16-2011, 09:30 PM
#7
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Car: Red 91 RS Camaro
Engine: LO3 with Comp Cam
Transmission: 700R4
Axle/Gears: 4th gen rear
Re: fuel pressure suggestions plz
come on.... wheres all the hardcore TBIers that have been playing with this injection method for years now?
my previous car ran 14.8 at its fastest and didnt have any of the engine work, all bolt ons. I had that one set at 12 or 13psi.
my previous car ran 14.8 at its fastest and didnt have any of the engine work, all bolt ons. I had that one set at 12 or 13psi.
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