Check my UPREV tune
#1
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Check my UPREV tune
I just want to verify that my car is tuned reasonably. AFR never goes above 13 unless I’m off throttle. Idle AFR is around 13. If I touch the throttle AFR goes between 10 and 11. I’ve attached my uprev log for my commute to work, I went wide open throttle a few times towards the end of the log. Let me know if I need to retake the log with any changes or If you need any more information from me.
The car is a 2004 G35 Coupe 6MT. I’m the original owner and it has about 150K miles on it. A couple years ago I took the engine out and had it rebuilt with 8.8:1 pistons (yes, I probably shouldn’t have lowered the compression but oh well, live and learn). 1000cc Injectors. Walbro 525lph pump with return system. Uprev GT MAF. Vortech V-3 Sci supercharger with 2.87 pulley. I’m new to this but I did all the work myself, except for the engine internals and heads. I’ve really enjoyed the car supercharged for the past few years so it’s proven to be reliable and I consider that a success even though it doesn’t make near the power I thought it was going to (it’s around 375 to the wheels with a boost pressure around 7psi). I know even less about tuning which is why I wanted to get some feedback. Any insight is appreciated. Thanks!
The car is a 2004 G35 Coupe 6MT. I’m the original owner and it has about 150K miles on it. A couple years ago I took the engine out and had it rebuilt with 8.8:1 pistons (yes, I probably shouldn’t have lowered the compression but oh well, live and learn). 1000cc Injectors. Walbro 525lph pump with return system. Uprev GT MAF. Vortech V-3 Sci supercharger with 2.87 pulley. I’m new to this but I did all the work myself, except for the engine internals and heads. I’ve really enjoyed the car supercharged for the past few years so it’s proven to be reliable and I consider that a success even though it doesn’t make near the power I thought it was going to (it’s around 375 to the wheels with a boost pressure around 7psi). I know even less about tuning which is why I wanted to get some feedback. Any insight is appreciated. Thanks!
Last edited by aaronbc; 06-06-2023 at 10:08 AM.
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fullvietFX (06-06-2023)
#2
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do you do any auto cross? Curious how yours temps run with a SC compared to turbos. Also, roughly how much did the engine rebuild cost? Im looking at doing something similar to mine. Did you have a local shop do it? Im not a tuner but those sound pretty good to me, Im at 13.3 WOT
#3
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No, I haven't done any auto cross. My temp on my commute this morning stayed around 180F (it was 80F outside). Rebuild cost was around 6K (Forged rods/pistons, ARP head bolts, etc.) It's a DE motor but they modified the block for better cooling and it uses the HR head gasket now. I had the long block done by Import Parts Pro near Houston but I don't know if they still provide the service. Thanks for the feedback on your AFR.
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BigBlue (08-24-2023)
#12
you didnt log your STFT, you can create a map in Mglv to see if your hitting your targets, when youre not in boost youre in closed loop, bigblue is right while cruising, 14.7
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BigBlue (06-14-2023)
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BigBlue (08-25-2023)
#17
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i8acobra is exactly right; My Bad guys! Sorry I spaced out; 13 at WOT is way LEAN !!! *sitting here and picturing my guage was just the opposite of what I was thinking!
Last edited by BigBlue; 08-25-2023 at 12:27 PM.
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