Running pig rich after Racetronix???
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From: Westby, WI
Running pig rich after Racetronix???
I just installed the Racetronix pump and hot wire kit. Made no other changes. Car was running great, now with the new pump it's running rich as hell and lost some power. Is this common? Right now I'm wishing I had just gone with a stand alone for the nitrous (which isn't installed yet)
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fuel pressure change? injector change?
I'm assuming its your 99 car, your fuel pressure may have changed by serveral psi... but that should have made that crazy of a difference
I'm assuming its your 99 car, your fuel pressure may have changed by serveral psi... but that should have made that crazy of a difference
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From: Westby, WI
Same injectors. The ONLY thing that I changed was the Racetronix pump and harness. Don't have a way to check fuel pressure; I should get some type of tuning software as I'm several hours away from any tuners.
The car went from running clean as could be to puffing black smoke. I'm pretty used to my car--I've had it for 5 years and only made minimal changes to it so far. I know it would run at least 3 to 5 tenths slower in the quarter
The car went from running clean as could be to puffing black smoke. I'm pretty used to my car--I've had it for 5 years and only made minimal changes to it so far. I know it would run at least 3 to 5 tenths slower in the quarter
#4
Kleeborp the Moderator™
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Most people report a fuel pressure increase when installing a Racetronix pump, and from my experience, a ~5-ish psi increase in fuel pressure was enough to cause me to go from running a 13.0:1 AFR at WOT down to 11.5-ish:1 WOT, and it was noticeably sluggish.
You need a retune, plain and simple.
You need a retune, plain and simple.
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get it re-tuned for the correct AFR. or get EFI LIVE or HPTUNERS software and go at the IFR table,
i have a GOOOD sticky and excel file to help you calculate all of your IFR table under the fuel and injection page, its a STICKY
i have a GOOOD sticky and excel file to help you calculate all of your IFR table under the fuel and injection page, its a STICKY
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From: Westby, WI
Great. Part of the reason I chose nitrous was because of the lack of tuners in the area, and thought I could add power without needing a tune. Should have gone with the stand alone at this point in the game.
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#8
Kleeborp the Moderator™
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Honestly, if you just sack up and buy the software and learn how to tune yourself, it'll be the best investment you'll ever make. Stuff like this is exactly why I got the software early on...if I made a mistake, I could always revert back to the stock tune and try again.
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buy you a copy of EFI LIVE or HPTuners and go at it we will help
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From: Westby, WI
I was referring to a stand alone fuel system for the nitrous. So for software, (EFI LIVE or HPTuners) which one would you suggest? Is a wideband necessary, and if so which one?
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Honestly, if you just sack up and buy the software and learn how to tune yourself, it'll be the best investment you'll ever make. Stuff like this is exactly why I got the software early on...if I made a mistake, I could always revert back to the stock tune and try again.
There is a link in my sig that will help you set up a fuel pressure sending unit for logging. ZL1 has the sticky that will help you use the data you logged.
#18
You can't just remove the reg. It is required to divert the return fuel back into the bottom of the bucket through the silver leg. You can modify the reg just to be a plug OR machine a cap to go into its place.
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#20
As long as there is a tube returning this fuel into the bucket you are OK.
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Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<