01-16-2009, 08:25 PM | #1 |
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fuel pump question
I finally got my turbo fixed. I drove my car a couple times and it quit smoking. It builds very good boost, around 27-29 psi. But the power seems to level off at around 12-15psi. Im still running the stock pump which is like 88lph or some wimmpy stuff. Does anyone else think that it is just leaning out? I mean at 29 psi the car should be going nuts shouldnt it?
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01-16-2009, 09:06 PM | #2 |
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You need to get a 255 lph in there soon! Ask coupe if he still has one. Your car is gonna run lean!!!
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-Don 86GT (sleeping in the garage for now) 87 T-bird Turbo Coupe (daily driver) 87 Ranger ($100 work truck) Meat is murder!... Tasty, tasty murder. |
01-16-2009, 09:27 PM | #3 |
3v's are slow
Join Date: Dec 2004
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stock pump is waaaaaaaaaay to small!!
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2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy |
01-17-2009, 10:58 AM | #4 |
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is anyone else using the hy35? so when i put the big pump in should I see a huge gain in performance. Also, i want to get rid of the factory rev limiter, i dont like the idea of cutting fuel. Im going to let the MSD handle the rev limiting. Who is the best person to talk to about that?
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01-17-2009, 03:46 PM | #5 | ||
3v's are slow
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Location: Here and There
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Quote:
Quote:
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2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy |
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01-17-2009, 05:10 PM | #6 |
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I like hitting the rev limiter. Makes me proud!!!
Injectors, fuel pressure, A/F. My first setback was fuel on the dyno. Had a bad regulator. Then I replaced it piece by piece. power will fall badly and seeing the dyno guy lift at 4500 rpms lets you know you have a problem. 255 pump is about $112 AFR is about $80 42 lbs injectors $220 30 min's on the dyno will save you $$$$ Then your next upgrade should be brakes! I have had the timing off enough to do that also. Never hurts to check everything, A bad plug wire will drive you nuts!!
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01-17-2009, 06:08 PM | #7 |
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I checked the cam timing with a string, dead on. But i did check the ign timing with a light and it was only set around 8deg. I turned it up to about 12 and went and drove it, big improvement. So ill keep tuning on it. I want some bigger injectors, but i dont think im ready for that yet.
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01-17-2009, 08:07 PM | #8 |
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Running that much boost, you really need more fuel. Get the 255lph pump and at least a set of 42's...you'll be safer.
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-Don 86GT (sleeping in the garage for now) 87 T-bird Turbo Coupe (daily driver) 87 Ranger ($100 work truck) Meat is murder!... Tasty, tasty murder. |
01-18-2009, 01:06 PM | #9 |
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were is the best place to get bigger injectors, and a chip burned to use them?
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01-21-2009, 09:32 PM | #10 |
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They need to be low-impedence. I can get probably anything you need, but let me know what the chip is going to be for... There's a couple folks here who play with chips for these things. I'll let them chime in.
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