no tune mods

[wickedpsi]

rotofab + 5% lower pulley is ok with no tune?

[Travis104]

You can do that with no tune, or you can run a 10% lower and rotofab with no tune, but you have to add torco to the fuel.

[Chrispy]

According to JRE you can also run a 10% lower and keep the stock airbox for stealth as well.

[JANNETTYRACING]

Originally Posted by wickedpsi

rotofab + 5% lower pulley is ok with no tune?

I think you will find this thread helpful.

I did all the testing on my own ZL-1

http://www.camaro5.com/forums/showth...highlight=TUNE

Jannetty Racing No Tune power package Here.

http://www.jreperformanceparts.com/g...n-package.html

[RandysZL1]

Adding Torco to the fuel? Is that for the roto fab install? Travis

[Chrispy]

I have a quick question. For the 10% pulley and stock airbox can you run a higher flow filter like the K&N or green without entering into knock retard territory?

I like the stealth look.

Thanks,
Chris

[Travis104]

Randy, the torco is if you run the 10% lower pulley with no tune. JRE offers a 75RWHP tune and no tune kit. With the tune kit you run 93 octane fuel, but the no tune requires torco, higher octane fuel, to compensate with the stock tune.

[wickedpsi]

thank you for all the responses.
what size is the 5% pulley? what size is the 10% pulley?

[Travis104]

I think the 10% is an 8.6, not sure about the 5%. I believe stock is an 8 inch.

[Emvici]

a good tune is one of the best things you can do for your car. trick in finding a good tuner.

[JANNETTYRACING]

Originally Posted by Chrispy

I have a quick question. For the 10% pulley and stock airbox can you run a higher flow filter like the K&N or green without entering into knock retard territory?

I like the stealth look.

Thanks,
Chris

An aftermarket filter in the stock box does nothing other than give you a lifetime filter, there is no performance advantage.

Because of this, it is logically possible but I have not tested it to confirm, Only logging the combination will tell for sure.

Ted.

[Chrispy]

Originally Posted by JANNETTYRACING

An aftermarket filter in the stock box does nothing other than give you a lifetime filter, there is no performance advantage.

Because of this, it is logically possible but I have not tested it to confirm, Only logging the combination will tell for sure.

Ted.

Thanks Jacfab showed over a 200cfm difference between the drop in and the green at 28 inches of water so I wasn't sure. The Vararam folks also showed an increase on their flowbench with stock intake, head on the bench so wasn't sure. If I go that route I'll log and see how it looks.