2017 Truck Build. Whipple install

[Tanner Smith]

Did they have to do any fuel upgrades with the 4'' pulley? or just a tune? I want to do a smaller pulley on mine. I have a 4.125'' pulley on it now.

[Tanner Smith]

On 4/15/2019 at 6:22 PM, Denali34 said:

They are running about 2-3 months behind in the shop now but when I did drop off it took them 3 days start to finish to get it done. I have another appointment in May to have the headers, cats ,smaller pulley and new tune done. Told me 2 days once I dropped it off.


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Did they have to do fuel upgrades for the 4'' pulley? I got a 17 6.2 with the whipple but it came with a 4.125'' pulley and want to go slightly smaller. Thanks

[jrmcswain]

I had the Whipple installed by Hennessey Performance. But to deal with the 10.5:1 compression they changed the cam and deleted variable valve timing. How does Vengance Racing deal with the high compression? With the cam they did hardened push rods. Some kind of catch can with positive crankcase ventilation. The ported the heads. Borla touring exhaust. It's a Goliath 650 package. Doing hard runs I'm sitting about 12.5 mpg 

[cmysstailights]

On 4/23/2019 at 7:17 AM, Denali34 said:

Ok that sounds like a plan. I had those UltraFlos on my Challenger. I will have 3" welded in and use 2 of those instead of a chambered muffler. Thanks again for all your help 

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