Ok. so I'm gonna order up my 4" asp 7psi pulley right away here.

Will i see 7psi? or will i lose 0.5psi from my aftercooler????


If that's the case... should I get a 7.5psi pulley?

 

Im kind of in the same boat, im looking for a safe 7-8psi setup as i have an aftercooler and EMS. i dont want to get greedy and with the 4.57's i think 7-8 will make me plenty happy. 4" has documented by several CTSC with a/c owners, numbers vary a little. im leaning towards 3.75" or so to make 7.5-8psi. But my overall goal is to have a setup thats safe enough to not require upgrading the retainers or anything else just yet.

 

Get a 10psi Pulley from Science of Speed!

Forget about 7psi you will end up wanting more Power Get a 10psi pulley from SOS and Tune Right! You'll se like 350WHP

 

i am looking for a safe setup that wont bring the max impeller speed close to max speed. i would be happy with 7-7.5psi. im thinking 3.75-4" pulley but i am still researching and looking if any 4" CTSC owners have got more than 7.5psi on their pulley. i dont want to get greedy and regret it later.
CHRIS,.

 

With the 10psi pulley wich is 3.25' will not exeed the Impeller speed on the Paxton Novi 1000!

Right now, I have a 2.89'' Pulley un My Novi1000 Waiting for Clucth and some tuning, Expecting 15psi

 

4 inch with the aftercooler s/b around the 7.5 or so...
Im getting the AP2 (little larger than 4") pulley from comptech but i'm not ac so I should see around 7 lbs with that.

 

but a 4" pulley would be fine without ems and stock injectors, right?

just up the fpr a bit right?

 

When you guys get gears, what brand do you guys go for, KAAZ.....?

 

This should be NOOOOOOOO PROBLEMO!
I'm going to be running in the 7 range without an aftercooler and it is totally safe.

 

with the aftercooler whats a "totally safe" pulley size? 3.75"? i think 7psi will max out stock injectors but i have 750's and ems so im not worried on that end i just am worried about the engine itself and want a safe setup. If 10psi is pushing it i like the margin of error i have at 7-7.5psi alot more than 8.5-9psi.