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

 

[jnord]

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

Yes it does. I bought the kit from Whipple directly. I just curious if anyone had any experience or knowlege here if there is any 'room' in the tune to allow at least a state 1 cam and that won't cause a smogging issue. I messaged Whipple last week...but still have gotten a response; I'm thinking they aren't going to want to give an answer and will just stick to what's safe for them of "no modifications" with the kit.

 

[justirv]

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

If I recall correctly, in CA, smog will be visual, reconciled with any CARB EO's, then OBD-2 scan. If no MIL, and all State Req'd tests are "ready", you should pass. Whipple provides a CARB certified tune, they more than likely will not provide any info on modifications that skirt that certification. As far as camshaft selection, it is my understanding that on an N/A application, one can go as high as 212°/218° at about .550" without being noticed by the test facility. I'm not sure if the whipple tune would be able to adjust to this non-stock profile, but it should perform better than the stock cam. I want to S/C my 2002 Z71 Tahoe... being DBC my choices are limited vs 2003+ DBW. Following!

 

[J5races]

Yes it does. I bought the kit from Whipple directly. I just curious if anyone had any experience or knowlege here if there is any 'room' in the tune to allow at least a state 1 cam and that won't cause a smogging issue. I messaged Whipple last week...but still have gotten a response; I'm thinking they aren't going to want to give an answer and will just stick to what's safe for them of "no modifications" with the kit.

If your kit is like mine, it switches main fuel metering to the provided 3 bar map sensor. So I would think you would need. retune to safely make any more power as I dont think the map sensor is going to know you need more fuel to go with the extra flow of a better cam at the same boost level.

Also, I spoke to Calloway a while back and they said my truck (2018 6.2L) is pretty much out of fuel at what we are making for power. They said we would have to upgrade all kinds of things to make more power (LT4 High pressure pump, Fuel line size, in tank pump) etc.

Id love to hear from someone making more than 640hp crank horse on a 2015-2020 setup with stock fuel system (I really hope it can be done safely)

 

[Doubeleive]

as long as you have the carb sticker for the "visual" inspection, there never going to know anything different as long as all of your sensors show "ready" when they plug into the obdii port
even with the new check they started doing last year

 

[J5races]

as long as you have the carb sticker for the "visual" inspection, there never going to know anything different as long as all of your sensors show "ready" when they plug into the obdii port
even with the new check they started doing last year

Are you sure? I thought I read that the OBDII checks fora tune, and then compares legal (registered or known tunes) versus a custom one. And that you fail if its not a known tune CARB has approved.

Is that a bunch of nonsense or could that be how it actually happens?

Thank you

Jon

 

[Doubeleive]

Are you sure? I thought I read that the OBDII checks fora tune, and then compares legal (registered or known tunes) versus a custom one. And that you fail if its not a known tune CARB has approved.

Is that a bunch of nonsense or could that be how it actually happens?

Thank you

Jon

there only checking that kind of software on diesels, as long as you have the carb sticker your fine

 

[justirv]

Are you sure? I thought I read that the OBDII checks fora tune, and then compares legal (registered or known tunes) versus a custom one. And that you fail if its not a known tune CARB has approved.

Is that a bunch of nonsense or could that be how it actually happens?

Thank you

Jon

Thanks Jon, there's been a lot of questions here in CA regarding the State being able to look for altered tunes, by way of "checksums" I beleive. I'm not sure what the dates or model years are involved, or gas vs. diesel. If their (CA) intent is to truly check and compare to OEM "checksum", absolutely any tune change would alter that number. I had added e-fans to my 2002 Tahoe Z71, expected the worse, and passed CA Smog this Spring with no problem. Asking the smog tech, he said that minor changes shouldn't be an issue. I'm not sure how a rudimentary OBD2 scan would reveal any changes to the fueling map, timing tables, or EGR delete, etc. Possibly on newer vehicles, or diesel as mentioned. I'm looking to hear from those with more expertise.