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Nov 2, 2007 | 03:56 PM

4literGasEater

Thread Starter

Joined: Oct 2007

Posts: 41

From:

more problems

ok so when i got my car tuned about 2 weeks ago we ran into some serious problems. I made 290hp with my pump at 100 percent duty cycle. I had the shop put in 750cc injectors and a focus svt fuel pump. Today the car made 318hp. Now i am really pissed, it may be bad valve springs or ignition but i am running out of freaking ideas. Anything like this ever happen to anyone out there? suggestions please!?!?!

Nov 2, 2007 | 04:33 PM

josh.davis

3rd Gear Member

Joined: Sep 2007

Posts: 643

From: MO

RE: more problems

more info?

Nov 2, 2007 | 04:43 PM

4literGasEater

Thread Starter

Joined: Oct 2007

Posts: 41

From:

RE: more problems

The car has a p series pro charger, and i did do a complression test. The lowest compression was 155, the highest being 175. It now has a MAFIA mass air flow so it wont lean out on top end my air fuels are perfect all across and i am running 11 pounds of boost.

Nov 2, 2007 | 05:15 PM

oxfordgt

6th Gear Member

Joined: May 2006

Posts: 6,448

From: Ohio

RE: more problems

What kind of car? 318 is very low even for a non pi (if thats what you have). 155 is very low compression for these motors. We need more info on your car and what you have done to it.

Nov 2, 2007 | 06:36 PM

2002GTAUTOVERT

5th Gear Member

Joined: Mar 2007

Posts: 2,441

From:

RE: more problems

Quote:

ORIGINAL: 4literGasEater

ok so when i got my car tuned about 2 weeks ago we ran into some serious problems. I made 290hp with my pump at 100 percent duty cycle. I had the shop put in 750cc injectors and a focus svt fuel pump. Today the car made 318hp. Now i am really pissed, it may be bad valve springs or ignition but i am running out of freaking ideas. Anything like this ever happen to anyone out there? suggestions please!?!?!

how much LB/HR is that? i dont remember our fuel pumps topping out until over 300rwhp (this is assuming these are RWHP numbers) if your tuner only got 318 rwhp from a supercharged 4.6 id say get your car off the dyno and take it somewhere else. you need to go with a colder plug but that wont steal 50hp from you. what PSI are you at?