[TXWatchGuy]

Howdy folks, and happy NYE.

I've had a problem for a few weeks now with my car getting to about 4k at or near full boost in maps 1, 2 or 5 and just switching back to map 4. No code is thrown, or and nothing magical happens. The only code my car has ever had was 2F6C for the exhaust flap input signal. The car is going, pulling strong, and just blurp, boost settles back down to 8psi.

I'll attach the pic and spreadsheet of my log file. The AFR's look like they're running amok. Anyone see anything else from here? What should be my next course of action?

Thanks a bunch,
Peter

[The1ontop]

What's the boost fail safe set at ?

[The1ontop]

It usually will do that if it detects knock so there is got to be a reason for it happening not magic

[335NJ]

Upload log to Datazap, are you running any E85?

[TXWatchGuy]

Boost failsafe is at 18.5. The highest I get in the log is 14.9.

[TXWatchGuy]

Originally Posted by 335NJ

Upload log to Datazap, are you running any E85?

No e85 right now, running straight 93. Who or what is Datazap?

[335NJ]

Originally Posted by TXWatchGuy

No e85 right now, running straight 93. Who or what is Datazap?

Datazap.me is an easy site to load your CSV into to make reading a little easier.

[TXWatchGuy]

Originally Posted by 335NJ

Datazap.me is an easy site to load your CSV into to make reading a little easier.

Ah, gotcha. Thanks, that's a cool site. I uploaded it and hopeully it shows up here:

http://www.datazap.me/u/pdimas/jb4-resetting-map-4

[PURE135i]

Dude at a glance that looks lean as sh1t for 93 octane.

[335NJ]

Try to get a 3rd gear pull from 2k RPM upto around 6,500k then stop the log. Looks like throttle closure at the end since pedal is at 100 but throttle hits 66, I'm not a good log reader though lol.

Post the .CSV over at N54Tech.com for Russell to review if another member doesn't figure it out by then.

[TXWatchGuy]

I'll try and get a pull like that tomorrow. I'd do it now but the area is lousy with cops. lol

[335NJ]

Originally Posted by TXWatchGuy

I'll try and get a pull like that tomorrow. I'd do it now but the area is lousy with cops. lol

Nothing like a high speed run with a laptop on the passenger seat to ring in the new year lol, do it when it's safe. Also make sure you're on the latest firmware 28_3

[Mike@N54Tuning.com]

For professional JB4 log help post the CSV file to their support section. In this case the issue is obvious. Fuel trims are maxing out because you've set open loop too low. The default setting is 70.

Mike

[TXWatchGuy]

Originally Posted by Mike@N54Tuning.com

For professional JB4 log help post the CSV file to their support section. In this case the issue is obvious. Fuel trims are maxing out because you've set open loop too low. The default setting is 70.

Mike

That's weird because I have literally never changed any of the parameters. It just started happening one day and I assumed it was a spark problem or something. I'll update to the new firmware, change the open loop setting this afternoon and pull another log to see how she goes.

Thanks for the help,
Peter

[samuelmccarthy13]

Originally Posted by TXWatchGuy

That's weird because I have literally never changed any of the parameters. It just started happening one day and I assumed it was a spark problem or something. I'll update to the new firmware, change the open loop setting this afternoon and pull another log to see how she goes.

Thanks for the help,
Peter

Having this same problem, ever find the solution?