[Nonecure]

I have been running this tune for 10 months and it has been great. My car has been feeling very sluggish lately and I am trying to figure out what is up with it. It feels to me like it is too rich at low rpm, almost bogging down. This is a 3rd gear pull on a Shiv tune. The txt file is really a csv file.

Thanks, Doug

[mike@x-ph.com]

Datazap for better help

[924er]

Originally Posted by BuellsterR1

Your AFR, fuel trims, and timing looks good.

What I'm confused about is your boost log. Is the blue line "target boost" and the black line "actual boost?" The scaling wouldn't indicate this but since the lines somewhat mirror each other with a slight delay initially, this leads me to believe it is. If this is the case, your down on boost throughout the whole range.

Datazap log for more responses...

I'm not tryna hijack this thread but since we are already talking abou datalog here is mine stage 1 sport + COBB. How does it look? Is it safe to drive ?

http://www.datazap.me/u/moswissa/sport-e20-1?log=0&data=1-22

[BuellsterR1]

Originally Posted by 924er

I'm not tryna hijack this thread but since we are already talking abou datalog here is mine stage 1 sport + COBB. How does it look? Is it safe to drive ?

http://www.datazap.me/u/moswissa/spo...og=0&data=1-22

Your log looks good to me. I do recommend an intercooler somewhere in the future if you plan on running the car through a couple of gears at full throttle. Your IAT shoots up 25+ degrees in one gear. The next consecutive gears will heat soak the car and will dramatically reduce your power output.

[Nonecure]

Originally Posted by mike@x-ph.com

Datazap for better help

http://datazap.me/u/nonecure/3rd-gea...log=0&data=3-4

That's a nice log viewer, thanks for pointing that out!

BuellsterR1, I do have a 7" VSRF Intercooler. My car was hot from a 1 hour commute, so maybe that was part of the heat issue.

[924er]

Originally Posted by Nonecure

http://datazap.me/u/nonecure/3rd-gea...log=0&data=3-4

That's a nice log viewer, thanks for pointing that out!

BuellsterR1, I do have a 7" VSRF Intercooler. My car was hot from a 1 hour commute, so maybe that was part of the heat issue.

Ur IC is doing a good job Ur temps only went up 5'F

I have the 5in vrsf FMIC and my temps start at 100 and end at 120

Should have got the 7in

[mike@x-ph.com]

Originally Posted by Nonecure

http://datazap.me/u/nonecure/3rd-gea...log=0&data=3-4

That's a nice log viewer, thanks for pointing that out!

BuellsterR1, I do have a 7" VSRF Intercooler. My car was hot from a 1 hour commute, so maybe that was part of the heat issue.

Car is over boosting causing a throttle closure.

[924er]

What does it mean when your timing is low and doesn't go higher than 6 at higher RPMs. I hear it's supposed to be around 10

[11SEC]

Originally Posted by 924er

What does it mean when your timing is low and doesn't go higher than 6 at higher RPMs. I hear it's supposed to be around 10

That can mean a few things but typically its usually fueling.

[BuellsterR1]

Originally Posted by mike@x-ph.com

Car is over boosting causing a throttle closure.

^^^ This

Also, my original IC statement was for 924er regarding his log. Your 7" IC seems to be doing to job well.

Concerning the throttle closure issue, I'm wondering if this is an underlying wastegate issue.....maybe it's not opening enough when target boost is met and thus, throttle closure is employed to protect against over boosting.

Your AFR, FT, and timing looks good.

[Nonecure]

Possible wastegate problems, can this be my issue of intermittent slow spoolups? For example could the wastegate be sticking (open or closed)? I have been tuned for 2 years now and I just know something does not feel right. Feels very sluggish until I get the rpms up.

[Allen@MOTIV]

Originally Posted by 924er

I'm not tryna hijack this thread but since we are already talking abou datalog here is mine stage 1 sport + COBB. How does it look? Is it safe to drive ?

http://www.datazap.me/u/moswissa/spo...og=0&data=1-22

Originally Posted by 924er

What does it mean when your timing is low and doesn't go higher than 6 at higher RPMs. I hear it's supposed to be around 10

Your log looks good. I recommend resetting to the default logging list before getting future logs, though. Also, typically the reason for "low" timing when timing corrections aren't the culprit is charge air temps. When above ~110F the DME will begin using correction factor tables to lower timing in an effort to prevent knock.

Originally Posted by Nonecure

http://datazap.me/u/nonecure/3rd-gea...log=0&data=3-4

That's a nice log viewer, thanks for pointing that out!

BuellsterR1, I do have a 7" VSRF Intercooler. My car was hot from a 1 hour commute, so maybe that was part of the heat issue.

The car is essentially overboosting throughout the entire pull. The DME is closing the throttle plate in an effort to limit the boost. This can create a very sluggish and unresponsive feeling car. The overboost is likely tune related.

[924er]

Originally Posted by Allen@PTF

Your log looks good. I recommend resetting to the default logging list before getting future logs, though. Also, typically the reason for "low" timing when timing corrections aren't the culprit is charge air temps. When above ~110F the DME will begin using correction factor tables to lower timing in an effort to prevent knock.



The car is essentially overboosting throughout the entire pull. The DME is closing the throttle plate in an effort to limit the boost. This can create a very sluggish and unresponsive feeling car. The overboost is likely tune related.

cool thanks for the info! eventually I'm getting pro tuned but waiting on DPs

[924er]

Originally Posted by 11SEC

That can mean a few things but typically its usually fueling.

.

[924er]

Originally Posted by BuellsterR1

Your log looks good to me. I do recommend an intercooler somewhere in the future if you plan on running the car through a couple of gears at full throttle. Your IAT shoots up 25+ degrees in one gear. The next consecutive gears will heat soak the car and will dramatically reduce your power output.

sadly i do have an intercooler. I have the VRSF 5in. i was told its efficient enough for stock turbos but i guess not. also it was like 90'F outside and my car was fully warmed up. I have other logs where charge temps only go up between 7-15'F. it could be the weather

[Nonecure]

Originally Posted by Allen@PTF

The car is essentially overboosting throughout the entire pull. The DME is closing the throttle plate in an effort to limit the boost. This can create a very sluggish and unresponsive feeling car. The overboost is likely tune related.

That's good to know, thanks. This is an OTS tune that has been fine (past logs don't show the throttle closures). Obviously it needs to be re-tuned to correct this, but I am curious if anyone can tell what might have changed to cause this after 10 months?