rattyzn

Okay guys... PLEASE clarify for me. From South Africa. I have a Chevrolet Lumina UTE (equivalent to the Holden Maloo). Specs as follows

6 speed Manual Gearbox
6.0L LS2 Aluminium block bored to 4.030"
408 Eagle Stroker kit
Mahle Flat Top Pistons
1.85" rockers on inlet and exhaust
11.3 compression ratio
L92 heads (rectangular) ported and flowed
1 7/8" TNT ceramic coated long tube headers
2.5" twin exhaust with x connector
No cats
HP tuned
Ported standard LS air intake
Ported TB to 95mm
42LB injectors and std fuel rail
I have a FAST 102 LSXR air intake but I took it off as I lost power...? Why???

Currently making 430RWHP and 387 RWTQ...

Does this sound right ??
PS: Live by the coast. hot and humid.

Do I really need to go to a 3" exhaust?
Appreciate any feedback

redtan

iTrader: (5)

That does not help. But we need to know what cam you have.

DACTARI

iTrader: (1)

If you lost power with the FAST 102, then you must not have had it tuned after install. Te FAST will so dramatically increase airflow over the LS2 intake that the AFR will be very lean, and the computer will pull timing to prevent detonation. When I installed my FAST102, I went from 400 to 370 HP. Retuning the car brought me up to approximately 420.

I also second the above comment. We need to know what cam you have. If you are still on the stock cam then that could be your problem, and you are simply not exploring your cubes.