Stg2 boost at redline

[jimlloyd40]

Yup, understand that as well
I was providing my one data point since that was the ask. Some tuners go higher on boost, less timing or vice versa, etc
29psi does sounds pretty aggressive on an IS38. Which tuner was that curiously?

That was a local dyno tuner quite some time ago. DynoComp in Scottsdale, AZ.

 

[Acadia18]

Here's a log from my EQT Stage 2 file. It would peak at 28psi, but drop down to 18psi at 6500rpm before shifting.

 

[El_bigote_AJ]

Here's a log from my EQT Stage 2 file. It would peak at 28psi, but drop down to 18psi at 6500rpm before shifting.

Wrong turbo for the OPs question.

 

[El_bigote_AJ]

That's going to depend on the tuner also. When I had an IS38 it ran 29 peek boost tapering to 26 at redline.

Damn they had that thing Getting warm
at redline

 

[Acadia18]

Wrong turbo for the OPs question.

Yup. Didn't notice this was the R sub-forum.

OP can ignore my answer, that's on an IS20.

 

[ER9240]

My Cobb Accessport read 29.8 lbs peak boost. Stage 2 EQT 91 octane tune with 2.5 gallons of E85 splashed in. Stock fueling, all “stage 2” supporting bolt ons.

 

[NBMK7GTI]

My Cobb Accessport read 29.8 lbs peak boost. Stage 2 EQT 91 octane tune with 2.5 gallons of E85 splashed in. Stock fueling, all “stage 2” supporting bolt ons.

That’s peak though. OP is asking about the taper at redline.

 

[ER9240]

That’s peak though. OP is asking about the taper at redline.

Looked today. At 73 degrees ambient this afternoon, it was tapering to 22 lbs.