[cooper1965]

Originally Posted by 6th_gen_gino

Bet

Ok.

[Start The Machine]

Dam, I wish we had ethanol here :(

[Gibspeed3]

Originally Posted by cooper1965

Ok.

Noticed in the screen shot your in-tank pump pressure is only at 59psi. Has anyone here been flashing their FPCM's?

I'm not sure if you guys have seen any issues, but the stock file requests less pressure from the pump as airflow/load rises, which can really hold back power and cause HPFP cavitation at higher power levels.

[raflyer]

Originally Posted by Gibspeed3

Noticed in the screen shot your in-tank pump pressure is only at 59psi. Has anyone here been flashing their FPCM's?

I'm not sure if you guys have seen any issues, but the stock file requests less pressure from the pump as airflow/load rises, which can really hold back power and cause HPFP cavitation at higher power levels.

Yes, I have. I changed mine to keep the LP at 70psi. Made no difference at all in the HPFP and wideband afr. Still doesn't hurt to raise it though.

[cooper1965]

Originally Posted by Gibspeed3

Noticed in the screen shot your in-tank pump pressure is only at 59psi. Has anyone here been flashing their FPCM's?

I'm not sure if you guys have seen any issues, but the stock file requests less pressure from the pump as airflow/load rises, which can really hold back power and cause HPFP cavitation at higher power levels.

I have not paid the credits for the access yet, but I might now. With some help from raflyer and a few others , I have been seriously re-thinking what I thought I knew about the fuel system and its capability. Previously, my only concern with the FPCM, was on rare occasions during a WOT pull, I noticed a small voltage drop in the log that correlated to a reduction in power.

[Gibspeed3]

Originally Posted by cooper1965

I have not paid the credits for the access yet, but I might now. With some help from raflyer and a few others , I have been seriously re-thinking what I thought I knew about the fuel system and its capability. Previously, my only concern with the FPCM, was on rare occasions during a WOT pull, I noticed a small voltage drop in the log that correlated to a reduction in power.

I will say that I know him from the ATS world, and he and I do not agree on most things LTG related, and I'll leave it at that.

The FPCM flashing is annoying to have to pay for it, but is a nice, cheapish safety net for where you currently are, while also being a near must for when you're really pushing a lot of air. With the stock file, it will pull that tank pressure all the way down into the 40psi range at higher load levels.

[raflyer]

Originally Posted by Gibspeed3

I will say that I know him from the ATS world, and he and I do not agree on most things LTG related, and I'll leave it at that.

The FPCM flashing is annoying to have to pay for it, but is a nice, cheapish safety net for where you currently are, while also being a near must for when you're really pushing a lot of air. With the stock file, it will pull that tank pressure all the way down into the 40psi range at higher load levels.

Come on now! Just because i didnt agree with your approach to tuning the LTG as speed density setup instead of Maff based doesn't mean either one of us are smarter or less capable than the other. Nothing wrong with different opinions as long as they are fact based and not emotionally based. Yes your way works and yes the stock maff way works. As long as we learn in the process, that is all that matters. More power and safer power

[cooper1965]

Originally Posted by Gibspeed3

With the stock file, it will pull that tank pressure all the way down into the 40psi range at higher load levels.

Your right. Reviewing several logs of mine, there is definitely a drop in my pressure ranging from 78ishPSI, to 45ishPSI at WOT. Something I had not noticed. Thank you for that.

[Evil-Bee-NH]

I had my tuner check this when i went for an E85 race tune and he didn't notice any issues with voltage drop or fuel pressure.

[Gibspeed3]

Originally Posted by Evil-Bee-NH

I had my tuner check this when i went for an E85 race tune and he didn't notice any issues with voltage drop or fuel pressure.

Maybe he doesn't think the drop is affecting your power where you're currently at and that's why he's saying it's a non-issue. As far as whether or not it's happening though, it's definitely happening and will only decrease further as you go further with power.