Originally Posted by
Dementors
Jesse, to clarify, I replaced the fuel filter but not with the high flow. I read your reply to fast the first time.
Thanks for posting your graphs. I am surprised at the difference in AFR from yours to mine with similar mods. I am curious what fuel pressure you are now running too. I need to get a reading on mine as well.
Originally Posted by
Silverarrow
Great information, thanks
here is another link that I like
Stealth 316 - Injector Duty Cycle Calculation
Originally Posted by
hustler316
I realized I'm an idiot, I posted without quoting who I was posting to....
I didn't pay attention to the the fact that Austin hijacked the thread lol.
Jesse: you have way to much fuel or a timing issue it appears...hard to say without looking at your tune. It looks like you need to pull some fuel as has been stated already but without seeing what your car is running for timing it's hard to say exactually.
Good advice, thanks! I am giong to buy the ultra guage since I can't afford the dashdaq right now to get some readings on LTFT and see what the timing is doing during an open loop datalog. I just wish there was a clean way to import the ultraguage data into the zeitronix graph to keep the timing the exact same.
Originally Posted by
velociabstract
I was running lean for quite a while. Re tunes weren't helping, not sure exactly why. However, after having my meth problem, removing and reinstalling everything, sending the injectors off for service, my AFR's are beautiful. (11.8 to 12.2) Being a non believer or hard headed, I stacked my Code3 with 178 crank pulley. I never made a full pull to redline because AFR's hit 16 accelerating in second gear. On went the Pierburg SL55 fuel pump and now the only place of concern is at the top of 3rd. where I hit 14 AFR. So, the pump helps. (1/4 times were identical stacked so the Code3 is back in the closet)
Summing up, start by optimizing what you have. Remote tunes are difficult for any tuner so try to make it to your nearest E/C location or preferred tuner for a dyno tune. If that can't fix it, next is the pump. Servicing the injectors is a good idea IMO. I did mine because my car sat from 9/05 until 6/08. BTW, I have some fresh serviced injectors I'll let go cheap!
Les
Always great to hear your experience. thanks for explaining it so well again.
What is the cost on a looped fuel rail from TTM? This is the only real way to equalize fuel pressure and the best way to get a fuel pressure guage sensor to read accuratley right?