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Whats ur max Boost?

SDGTP99

SDGTP99

New member
6.5lbs @ WOT on a 3.4" pulley :o

Thats w Open cone HAI, Ported TB, Ported inlet/outled S/C, St2 InterKewler(w/ PCV notch), Ported lim, headers, catless catback, 1.9' modified rockers, zzp tune.

I think it's probably about time to drop a pulley size.
 


LOL, ZZP Tune.

Anywho.

3.0"...about 11psi~ at the shift.

Mods: Thrasher Cam, P&P'd Heads, Ported GenIII M90/LIM, LS1 TB setup, LQ4 MAF-Open Cone, Catless Stainless Headers, 3" Catback...idk tons of other junk.
 
bluegtp91 said:
LOL, ZZP Tune.

Anywho.

3.0"...about 11psi~ at the shift.

Mods: Thrasher Cam, P&P'd Heads, Ported GenIII M90/LIM, LS1 TB setup, LQ4 MAF-Open Cone, Catless Stainless Headers, 3" Catback...idk tons of other junk.
Click to expand...

Where is all this proof that ZZP tuning sucks?

Anyway, on topic.

I see 27psi or so.
 
darkhorizon said:
Where is all this proof that ZZP tuning sucks?

Anyway, on topic.

I see 27psi or so.
Click to expand...

Turbo's don't count...honestly since it is in the supercharged section. Also...plenty of people, including me have had issues with ZZP's box tunes...others have not. The OP has had a blown motor...if not more than once.

So...yeah.
 


bluegtp91 said:
Turbo's don't count...honestly since it is in the supercharged section. Also...plenty of people, including me have had issues with ZZP's box tunes...others have not. The OP has had a blown motor...if not more than once.

So...yeah.
Click to expand...

Its every bit of a L67... sorry I dont have a m90...

Anyway, I would like to see the reasoning other than "blown motor"... Is it too much timing? too lean? To "blow a motor" with a "tune" is requires some extreme mistakes.
 
I've seen 11 at the highest on the 3.4 (trying to lower it). 6.5 on the 3.8. My buddies with a gs said the highest he's ever seen his was 10.3 all stock.
 


SDGTP99 said:
Whatever you're using to check your kPa should be showing your Boost & or MAP.
Click to expand...

ya i use HPT, my point is that the Map is actually Maxed out at about 5500 RPM's while shifting at 6100

HPT calculates boost at 13.5-14 PSI, but the actual number at the top of the gear is unknown
 


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