WHIPPLE 3.50" Pulley

[thedalejrfan]

Hey guys, is anyone here running the Whipple 3.50"pulley on the 2015?

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[evo8904]

I am, just haven't had time to dyno or go to the track. My car pulls a lot harder now than when I had the 3.75 pulley.

 

[thedalejrfan]

I am, just haven't had time to dyno or go to the track. My car pulls a lot harder now than when I had the 3.75 pulley.

Be careful!!! I installed the pulley and new tune from Whipple yesterday, put it on the dyno and I am running dangerously mean at high rpm. I data logged and sent the results to Whipple. According to Whipple, we are out of fuel system at this level!!!

 

[evo8904]

You are probably running a higher boost than I am. I see that you have the larger TB. I still have the stock TB. Do you have a boost a pump?

 

[thedalejrfan]

You are probably running a higher boost than I am. I see that you have the larger TB. I still have the stock TB. Do you have a boost a pump?

I have the larger throttle body and BAP

 

[LethalPerformance]

We're currently running a 15% OD balancer and a 3.875" upper pulley. I believe that combo yields us 15psi. We will be putting on a smaller pulley today to yield us 18-19psi.

We'll let you know the results once the car is tuned.

Jared

 

[Whipple SC]

Just so it's clear on "out of fuel". It's because fuel psi is falling, which makes the fuel inj have to open more to compensate. If it can hold 58psi, it would have no problem flowing enough fuel.

 

[thedalejrfan]

Just so it's clear on "out of fuel". It's because fuel psi is falling, which makes the fuel inj have to open more to compensate. If it can hold 58psi, it would have no problem flowing enough fuel.

Correct, we have another car with the same setup and stock 3.75"pulley that we are going to run on the dyno today for comparison. I will post results

 

[bmoore1488]

Was the 705hp with the 3.50 pulley?

 

[jayman33]

One of our customers was running the 3.5 with our Fore fuel system, he made right around 835ish on E85. No detonation either

 

[thedalejrfan]

Was the 705hp with the 3.50 pulley?

No, 3.75" pulley

 

[bmoore1488]

What did you make on the 3.50?

 

[thedalejrfan]

Didn't get to make a full pull, running way too lean. It was making a ton of power up until we aborted the run. Waiting for the LTH tune...

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