Whipple Power

[Jmeo]

Jaime if we meet up tomorrow we can do mine and take some pictures.

I will definitely help you Jay if not tomorrow when ever we can meet up. You still planning on hitting the garage tomorrow?

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[gsxr1300]

I just sent a txt to Dan to confirm, no reply yet.

 

[SmokedSS]

Great remember take "Pictures for Dummies" install. Referring top me

 

[SmokedSS]

Any pictures , directions yet on the wiring upgrade for the dual fans?

 

[SoCalTim]

I would love to get a Whipple installed on my GT.

650bhp must feel like warp-speed has engaged when you feed in the throttle.

 

[gsxr1300]

Any pictures , directions yet on the wiring upgrade for the dual fans?

Hopefully this weekend.

 

[SmokedSS]

Question for the experts. Whipples test car dynoed 677 @ 13.5 psi. My car dynoed 651 @ 10.9 psi. Same calibration only difference is I have a 3" fatback system. Would that cause the lower psi or am I having belt slip? Great numbers just curious on 2.6 psi less boost ?

 

[evo8904]

Question for the experts. Whipples test car dynoed 677 @ 13.5 psi. My car dynoed 651 @ 10.9 psi. Same calibration only difference is I have a 3" fatback system. Would that cause the lower psi or am I having belt slip? Great numbers just curious on 2.6 psi less boost ?

Which pulley do you have? 3.75? There are a lot of variables. Dynoes are a tuning tool, track times are a better indication of power. Also, catbacks won't lower your psi. Catless headers will sometimes.

 

[Texican1911]

3" fatback? Fried? Tasty!

 

[SmokedSS]

Which pulley do you have? 3.75? There are a lot of variables. Dynoes are a tuning tool, track times are a better indication of power. Also, catbacks won't lower your psi. Catless headers will sometimes.

Dyno #'s are great and I have the stock pulley with only mod difference from test car of 3" Catbacks not fatbacks lol…


Question is in 2.6 psi lower boost, should this vary on dyno's? Or do I possibly have belt slip during pull? I only had 10.9 max PSI on pull.

 

[evo8904]

Dyno #'s are great and I have the stock pulley with only mod difference from test car of 3" Catbacks not fatbacks lol…


Question is in 2.6 psi lower boost, should this vary on dyno's? Or do I possibly have belt slip during pull? I only had 10.9 max PSI on pull.

The stock pulley "3.75" puts out around 11 psi. However, different dyno, different car, different day, different environment and likely different tire pressure. A dyno is a tuning tool, go to the track and see what the car traps. Also, if they were at 13.5 psi...that is a different pulley.

 

[SmokedSS]

The stock pulley "3.75" puts out around 11 psi. However, different dyno, different car, different day, different environment and likely different tire pressure. A dyno is a tuning tool, go to the track and see what the car traps. Also, if they were at 13.5 psi...that is a different pulley.

thanks good info,

Just read somwhere on site new stock whipple cal hit 13.5 psi with stock pulley, if thats correct I may have belt slippage I know with new belt it does stretch and they did adjust after pull. If 11 psi is correct then my 10.9 is about as close tothat as you can get.. Its all good and the car pulls like crazy on top end and just keeps pulling. Haven't been to track but compared to last car that trapped 132 this car will definitely out pull on big end of quarter.

 

[OhNo5.0]

They didn't make 13.5 pounds on the stock pulley. I promise you that. I hit 13 lbs on a 3.625 and was risking detonation on pump gas. Stock pulley I'd good for 10 to 11lbs. Period.

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[SmokedSS]

Whipple Dyno

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[Whipple SC]

Question for the experts. Whipples test car dynoed 677 @ 13.5 psi. My car dynoed 651 @ 10.9 psi. Same calibration only difference is I have a 3" fatback system. Would that cause the lower psi or am I having belt slip? Great numbers just curious on 2.6 psi less boost ?

Our test car does not have 13psi, we have seen spikes at the RPM limit of .5psi more, and the original cal had 1psi more boost with different cam scheduling.

10.9 is 100% correct with a 3.75" pulley. Change to a 3.625" and that will add 1psi more, 20-25rwhp.

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