Power loss. Please help

[RSL]

Just checked. It is set to 2

Ok, load seems low for ~17psi, which means higher timing targets and other things. As suggested, octane booster or E85 would help clear up timing pulls and probably smooth things out, but either want to run boost for tuning you have or tune at the boost you want, especially on 93. The latter is best, but as a test, might suggest trying JB4 map 1 instead on the canned BEF and see how it feels/how logs look.

Is it a DCT tranny?

 

[Scott335is]

Ok, load seems low for ~17psi, which means higher timing targets and other things. As suggested, octane booster or E85 would help clear up timing pulls and probably smooth things out, but either want to run boost for tuning you have or tune at the boost you want, especially on 93. The latter is best, but as a test, might suggest trying JB4 map 1 instead on the canned BEF and see how it feels/how logs look.

Is it a DCT tranny?

Yes, DCT

 

[Maniac0908]

335is JB4, BEF, and MHD 93oct dyno testing - JB4tech.com - International Turbo Tuning Discussion

335is JB4, BEF, and MHD 93oct dyno testing N54

www.n54tech.com

This is the thread we have been using by terry. He uses his bef and jb4 on 93 with good results..... can someone look at logs and verify all settings are correct for the 335is since it has its own DME version and all. FUD seems like it’s set to 5 which if I’m correct does something with avg ignition? Also and other setting like duty bias and all that. And if we should maybe use a actual MHD map. I wish terry would chime in... seems like he did a lot of testing on the exact same car.

 

[RSL]

Calculated torque effects the clutch pressures, you'll want it higher to maximize. Increasing load would be step 1.

 

[Maniac0908]

Calculated torque effects the clutch pressures, you'll want it higher to maximize. Increasing load would be step 1.

Mind explaining this? And how to fix?

 

[RSL]

Increase load targets in the BEF using TunerPro would be a basic start and/or adjust Load to Torque tables. Tuning is whole separate topic that can go on ad naseum, get the combo basically working well with the car first.

 

[chrisdfv]

Nothing in the logs looks terribly off. The timing is a little wonky, and I think this is related to the variance in your trims from bank 1 to bank 2.

 

[Maniac0908]

Nothing in the logs looks terribly off. The timing is a little wonky, and I think this is related to the variance in your trims from bank 1 to bank 2.

What could cause that? Coils and plugs, injectors? Or is it the BEF?

 

[Maniac0908]

Ok so he did another pull yesterday. Stil has a little high timing. I just noticed that his IAT’s jump like 30 degrees on a pull. Will that cause a timing issue? I also read more into the 335is with dct and pretty much came to the conclusion that a custom tune is needed? Here’s a log he sent me. Don’t know how to covert it. When I uploaded it here it had all the JB4 options as parameters.

 

[doublespaces]

Scott,
Welcome!
First things first, we got to get your log loaded into the Datalog section of Spoolstreet, then copy it here. I did it for you (all on my iPhone) -

Remind me, how much am I paying you? You're doing a great job

 

[fmorelli]

True story. Fuel quality matters. Night and day pre E85 ... Shell premium consistently behaved better than any other fuel I could get. Good idea, @Rob09msport.

Filippo

 

[Maniac0908]

True story. Fuel quality matters. Night and day pre E85 ... Shell premium consistently behaved better than any other fuel I could get. Good idea, @Rob09msport.

Filippo

He put in octane booster in log above

 

[Jeffman]

Remind me, how much am I paying you? You're doing a great job

Thank you for the kind words, Tyler.

 

[NoQuarter]

Thank you for the kind words, Tyler.

Answer the fn question man! Don't leave us hanging!

 

[Jeffman]

Zero.
Zilch.
Nicht.
Nadda.