JANNETTY RACING ZL-1 NO TUNE PULLEY TESTING RESULTS

[JANNETTYRACING]

Originally Posted by bpc

I have a quick question if I install the 5% pulley and CA1 NO Tune package, and do the bypass valve adjustment witch gives you approx 1 to 1.5 psi, would this need at tune. What would be the boost level and power gains.

Hello bpc, I answered this question for you here.

http://www.camaro5.com/forums/showth...368220&page=10

Here is the response.

You have been mislead to believe that every car will pick up 1-1.5 psi boost by adjusting the bypass, that is simply not the case.

Stock pulleys make 8 psi boost at sea level.

If your bypass is out of adjustment you might only have 6.5 psi boost then you can get back to 8 psi boost by adjustment.

The 5% pulley make 1.5 psi over stock pulley or total of 9.5 psi.

No tuning is required if this is the only mod on 93 octane fuel.

[bpc]

Thanks for the responds this helps me to understand the correct psi. Should I add long tube headers with hi flow cats to the 5% no tune package, at this point would I require a tune.

[AJensen383]

Headers always require a tune

[JANNETTYRACING]

Originally Posted by bpc

Thanks for the responds this helps me to understand the correct psi. Should I add long tube headers with hi flow cats to the 5% no tune package, at this point would I require a tune.

You are welcome!

Originally Posted by AJensen383

Headers always require a tune

Correct.

[JANNETTYRACING]

Bump for 2018