if you can get 215hp out of turbo alone.. wonder why the software companies stopped at 20-25ish hp out of a chip. I guess its the octane rating that really limits the hp from programming and turbo alone. ie.. 100oct > 93oct in terms of hp.

 

the turbo isalmost out of its effinecy at 18-19psi. Then power has to be made by freeing up the exhaust and with timing since the turbo isnt worth more after that psi-wise. The octane will let you run more boost if the turbo can flow it and increase timing

 

i'm not connecting the dots why a ko3s can do 215bhp on its on and a revo chipped tt w/ ko3s is only doing 207bhp... why not take advantage of the other 8bhp out there?

 

so those APR statedgains are all for AWP based k03 turbo's...

where are the ATC chipped gains at

 

The Borgwarner numbers are rated a little low. A ko3 can and will easy make the top hp rating where as a garrett turbo rating (say gt2871r rated to 400) is harder to reach or do withen its effiency.

 

5-10hp and tq lower would be my best guess

 

How much did the Garrett gt3076r kit from pag parts cost altogether?

 

AFR's eliminators are better.

Cheaper too.

Almost 200hp over stock performance...

Too bad for you guys they are heads for small block chevy motors.
When I get bored with the datsun those will be going in.


The "original" head numbers are their old design which was good for 50hp over corvette aluminum heads.

 

Those are their small heads..... I have the 220 /23 degree heads flowing 330 cfm @ 6900 on my blown smal block