Quote:
Originally Posted by raytrix
@ sales@delicioustuning.com
I got the latest revision of the tune at Touge Factory from Mike where you guys went from 10psi to 9psi tune on my Greddy turbo kit with 725cc Injector Dynamics and 265lph Denso fuel pump tune but increased my timing for more response and torque at the lower end on Friday April 3rd. I just had the liberty of trying out the latest tune over the weekend (late Friday and all of Saturday). At least 120 miles on the tune and I've noticed that I get rev hang once I let off the gas and approach to a complete stop. It rev hangs at 1200 rpm sometimes up to 1500 rpm for good 5-8 secs before it idles down to 900rpm. Also my idle A/F is at 12.0 to 12.6 all day long even when the car is warmed up. I also noticed that my Short Term Fuel Trim sits at a full -25% at idle. Doesn't the computer try's to usually zero itself out to 0%. I never seen a car that sits at full -25% Short Term Fuel Trim during idle. Could all of this be related to each other? -25% Short Term Fuel Trim, 12.4 A/F at idle, rev hangs 5-8 sec at 1200rpm each time I let off the gas to a stop. Ever since the revision on the tune my Long Term Fuel Trim hasn't budged from 0% which technically is good but it's odd that it doesn't even the slightest correct itself due to temps or variation in the heats. On the previous 10psi tune the LTFT varied 0% idle and 7.3-9% cruising, I didn't pay attention to the STFT. I believe my idle was closer to 13.5-14.2 for that older tune. What do I do at this point? I feel kind of unsafe the way it's at now with the rev hangs, rich idle, and full -25% STFT at idle.
Here's a picture capture of my Greddy informeter readings at idle.
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PM'ed, and no that's not normal.
In the future please feel free to email me directly at
sales@delicioustuning.com.com, as I see emails as soon as they come in but just happened to be checking the forum at the right time this weekend.
Sincerely,
Zach
Delicious Tuning