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?

You need to get a 255 lph in there soon! Ask coupe if he still has one. Your car is gonna run lean!!!

stock pump is waaaaaaaaaay to small!!

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?

I don't know about a huge gain but it will keep you from running lean and blowing the motor.
You know, I hear this a lot. I don't buy it. If this were true, the manufacturers would not put this style of rev limiters on all cars. Cutting fuel completely off is not the same thing as running a lean fuel mixture.

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!!

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.

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.

were is the best place to get bigger injectors, and a chip burned to use them?

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. :nice: