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Gearhead single turbo tune, don't know duration. Also my GT4088R is using the more efficient GT4088 compressor wheel.

I am very happy with my GT4088R very quick spooling, and great top end. Put down 590 HP, I have used both the 1.06 & 1.15 exhaust housing.

Cody, what is the exhaust housing size your are using?

Very little.

It drives very nice with very good spool up, I have ran the .95 and 1.05, t4 housing. the 1.05 does not tow as well, and at freeway speed towing I get a haze out of the exhaust at low boost. I can hit 1650 EGT in 1/4 mile runs. it produces 32-35 boost drive is 40-45 psi in the upper rpm, with my...

I run a GT4088R, it made 590 at II dyne day.