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Yikes for a 2.87 that seems low for sure. I hit close to 400 with the 3.12 pulley and more with 2.87 when I had the Vortech setup. Your tuner should include boost reference. Let's wait and see what that is first.. Im guessing it wasnt making the boost level that the 2.87 puts out. The 8.8cr will choke it a bit but not THAT low imo
I have the car back. Here is a log of a 3rd gear run I did (starts at line 514). The car is super fun to drive even with the low numbers. Can't imaging how it will be if I can get the power up where it's supposed to be. Let me know if I need to share the file differently or if I need to capture the log differently or add data points. Below is the data at the highest RPM of the run. I also have a picture below of how I connected the EVAP line when installing the return fuel system. I noticed the supercharger kit from Z1 includes a brake boost check valve, do I need this installed somewhere? The tuner kit didn't come with one. Am I pressurizing my fuel tank? The tuner noticed that the belt tensioner is maxed out so I am going to install a boost gauge to get a baseline number. Then I'll get the belt tighter with a smaller belt and see if that makes a difference. Thanks for the help!
My timing at 6-psi at ~6000rpm is about 14 BTC iirc 26 is very high
Do you have a wideband? I am not seeing af/r
I do not have a wideband sensor. My compression ratio is 8.8:1. Would that explain the difference in timing? In the log, it looks like there is no knock being detected.
Do you have any of the logs from when you was dyno'd. Using the air flow across the MAF can be a rough guestimation of boost. It will also give you things like IAT's, Timing, RPM's, all the solid info.
I took a log of a 3rd gear pull (see post #27) and with the Uprev GT MAF it read 124.19gm/s @ 6550rpm. How can I determine a guestimation of boost with this number? Can you check my log to see if you notice anything out of the ordinary?
you didn't log Afr wb b1, but you logged afr target,
you have a huge target afr spike at 2100 rpm goes up to 30
your max bfs is 10.7ms
ignition timing max 43 btdc
no knock
did you tune yourself?
did you use uprev
what I mean is did you have a license for uprev or is it the tuners, and just paid the $300? do you have your romedit I can check it out,
you didn't log Afr wb b1, but you logged afr target,
you have a huge target afr spike at 2100 rpm goes up to 30
your max bfs is 10.7ms
ignition timing max 43 btdc
no knock
did you tune yourself?
did you use uprev
what I mean is did you have a license for uprev or is it the tuners, and just paid the $300? do you have your romedit I can check it out,
1) It's an 04 G35 6MT with a VQ35DE. It doesn't have a wideband sensor. I didn't see any AFR selection in the log settings other than target AFR but I'll double check.
2) The pull starts at timestamp 41973 and ends at 50822 and there is no spike in target AFR during the run. I believe the spikes are when I was shifting gears and/or off the throttle.
3) Is the max bfs of 10.7ms within a good range or do you think I'm having a fueling issue?
4) The max ignition timing of 43 BTDC was after the run while I was off throttle. The value at the end of the run was 26 BTDC.
5) I had it tuned by Jotech. I paid for my own uprev license and ARC. I don't have the romedit file from the tuner.
I don't know a way to see if your hitting your targets with out an afr wb sensor, the innovate 3877 LC2 kit is $152 and works with uprev,
the max bfs is a new bfs based on new injector size, so new injector size - old injector size/new injector size
example 1000 - 330 = 0.67
0.67 x 17.01 = 11.3 new bfs should be at the starting point of 11.3
17.01 is the highest bfs on your afr target map
seems like you spent some money for this project and if I'm reading it right your hp is at 334
if I had to guess id say your spark timing is way off,
Get that it's the only true way of seeing how you car is running. Hell I have ability to read boost and AFR for both banks and in not even FI yet. Without it I would still be running on the sad excuse of E-tune I got with my Uprev.
06-11-2021, 10:37 AM
