aem v1 tuning questions...
- Thread starter gsxr141
- Start date
You could run an inline pump along with the 255 in tank to boost the pressure capability. Best to just go to the 400.
i'm going to record the fuel gauge today and see what it's doing. do you guys really think that i'm out flowing the 255? i was under the impression that they were good for over 500 wheel.
could my 60-1 be flowing so much air under boost that i need a bigger pump?
could my 60-1 be flowing so much air under boost that i need a bigger pump?
A walbro and 550 should be plenty to max out that turbo.
Either your running out of fuel or your tune is bad.
Either your running out of fuel or your tune is bad.
well, i took it out for a drive just now. it's great at part throttle. as i floor it the gauge goes lean then rich as hell. it's weird.
i put in the newer pump, new clamps, and pushed in the little tab on top of the pump. i'm going to have my tuner drive with me and see what the computer says.
as far as the tune goes...... he's very knowledgeable with this system. as i stated earlier, we're at like 32% duty cycle at 3,000 rpm, and by 5,000 we're almost maxed out ..... with no extra fuel.
i put in the newer pump, new clamps, and pushed in the little tab on top of the pump. i'm going to have my tuner drive with me and see what the computer says.
as far as the tune goes...... he's very knowledgeable with this system. as i stated earlier, we're at like 32% duty cycle at 3,000 rpm, and by 5,000 we're almost maxed out ..... with no extra fuel.
Have you checked to see how crispy your connector and plugs are around the cps area. Back when I ran a 7m I had this and it took literally months for me to resolve it. I had everything from slight to bad breakup (happened most at 2500 rpm where the cps plugs vibrated just right and became flakey) all the way to simply having the car outright die when I was cruising at school zone speeds (and then not start till things had cooled down and the connections became good again)
Also you may have a weak or starting to fail wideband. Just went through this with my 2j. It started acting weird, slow response, outright incorrect readings and a drift towards lean after going and indicated extremely rich. The AEM references the O2 for alot of things depending on how the tune is set, mine refused to even start towards the end due to a O2 fault error before startup.
I would check ALL critical plugs and wires, these cars are getting old(ish) the wiring is really outright brittle and bad in places, it's to be expected.
Also you may have a weak or starting to fail wideband. Just went through this with my 2j. It started acting weird, slow response, outright incorrect readings and a drift towards lean after going and indicated extremely rich. The AEM references the O2 for alot of things depending on how the tune is set, mine refused to even start towards the end due to a O2 fault error before startup.
I would check ALL critical plugs and wires, these cars are getting old(ish) the wiring is really outright brittle and bad in places, it's to be expected.
Funkycheeze;2021820 said:
This is a very good post, I have had multiple cars that have this same issue. Most of the time it ends up being a leak in tank from the pump to the hanger. Watch/ log fuel pressure. Idle pressure means nothing in this case, its what its doing when under a load.
sooooo. i found out what the problem was, after i tried everything else..
apparently the hi-z injectors i bought were actually low-z. wtf?!?!?!?
the strange thing is, my car ran fine when i had them and the lex afm and NO resistor.
at least now i have a fuel system that should be good for 700+ hp.
apparently the hi-z injectors i bought were actually low-z. wtf?!?!?!?
the strange thing is, my car ran fine when i had them and the lex afm and NO resistor.
at least now i have a fuel system that should be good for 700+ hp.