Whipple Supercharger w/ BTR stage 2 cam in Cali?

[jnord]

I have a 2007 Yukon Denali that I have a Whipple kit to install.
Question is...I just bought a BTR stage 2 cam kit that has a VVT delete.
Anyone running this setup in Cali? I worried about if it will pass a smog test.
A local shop is saying that it won't run right with the BTR cam and VVT delete on the ECU flash that Whipple has, and will need a custom tune, which will make it not pass smog.
Any way around this (other than not installing the BTR cam and VVT delete kit)?

thanks

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

I suggest that you call Whipple and discuss with them in detail. Your 07 does not have an active AFM system (software never installed by GM), though the mechanical parts may exist in the motor. As such, the AFM delete hardware should not make a difference, IMO, but that is a question for Whipple to address.

 

[CMoore711]

Man…. Sounds like it probably won’t pass smog in Cali with a custom tune…

I live in Ohio so no worries here. You’re probably better off just sending me your whipple and cam kit. I’ll cover shipping costs.

 

[ivin74]

I have a 2007 Yukon Denali that I have a Whipple kit to install.
Question is...I just bought a BTR stage 2 cam kit that has a VVT delete.
Anyone running this setup in Cali? I worried about if it will pass a smog test.
A local shop is saying that it won't run right with the BTR cam and VVT delete on the ECU flash that Whipple has, and will need a custom tune, which will make it not pass smog.
Any way around this (other than not installing the BTR cam and VVT delete kit)?

thanks

That cam is not made for a super charger, it's too choppy, you need something in the 115* plus LSA.

 

[jnord]

That cam is not made for a super charger, it's too choppy, you need something in the 115* plus LSA.

Hmm. It's the cam BTR suggested over the phone. it's this part number...

BTR-PDSSTAGE2TQ

BTR PDS STAGE 2 TORQUE CAMSHAFT

 

[ivin74]

Hmm. It's the cam BTR suggested over the phone. it's this part number...

BTR-PDSSTAGE2TQ

BTR PDS STAGE 2 TORQUE CAMSHAFT

If I'm reading this correctly the spec's are 221/24X, .619/.617, 113 LSA.

A higher LSA will have a less choppy idle and give you less surging at red lights. With a lower LSA you get that cam chop everyone likes. Fctory cams are closer to the 114 / 115 LSA.

Higher LSA is used with blowers and lower with centrifical blowers. Google Z06 Corvette cam specifications and you will see what their LSA are. If GM uses those higher LSA numbers is for a good reason. They spend lots of money on research and development.


Hope this helps

 

[iamlegion]

How many miles on the motor and what size Whipple?

Depending on the blower size throwing that and a cam on a stock 150k+ mile bottom end may be asking for trouble before you ever do a smog test. Just my $.02.

 

[jnord]

How many miles on the motor and what size Whipple?

Depending on the blower size throwing that and a cam on a stock 150k+ mile bottom end may be asking for trouble before you ever do a smog test. Just my $.02.

The car actually runs really well and has really low miles for the year; only just over 74k. It used to be my in-laws, and they pretty much only used it to go to CostCo. lol
I believe the Whipple is 2.3 and runs about 8-9lbs of boost; not that much.

 

[blondie70]

I'm having a BTR NSR stage 1 cam put into my 5.3....also doing the VVT delete. Think I will need a tuner to get that VVT out of the ECM.
Good luck with yours....run that baby !

 

[J5races]

I have a 2007 Yukon Denali that I have a Whipple kit to install.
Question is...I just bought a BTR stage 2 cam kit that has a VVT delete.
Anyone running this setup in Cali? I worried about if it will pass a smog test.
A local shop is saying that it won't run right with the BTR cam and VVT delete on the ECU flash that Whipple has, and will need a custom tune, which will make it not pass smog.
Any way around this (other than not installing the BTR cam and VVT delete kit)?

thanks

Whipple kits with a CARB EO# (like I have on my Tahoe) are CA legal. But you cant change anything else (such as a cam) and retain emissions legality. Does your Whipple kit have a CARB # and Whipple provided smog legal tune? IF not, you are going to have a fun, quick truck that isn't CA compliant