2v Kenne Bell Issues

[Massie02GT]

Let me start by saying I did try searching, but didn’t come up with what I was looking for.

I know that the 2.1 KB for the 2v motors have issues with the bypass being over the #5 cyl, and the problems that come along with that.

My questions is - does that change with the larger KB blowers, or does the #5 cyl still deal with bypass related issues?

I’m currently building my motor and will either go with the KB 2.6/2.8 or go Tork Tech and a Whipple/VMP. I’ve had a couple Tork Tech kits in the past, and while I’m not extremely enthusiastic about using another one, it seems like it might be the best option if the KB is going to cause issues.

Thanks for any input!

 

[2000GTSTANG]

I can’t help you out but I do have a 2.2 2v that has been installed for many years now and the bypass is on the drivers side near the middle of the manifold. What problems have you heard of this causing?

 

[Massie02GT]

I can’t help you out but I do have a 2.2 2v that has been installed for many years now and the bypass is on the drivers side near the middle of the manifold. What problems have you heard of this causing?

Your bypass is in the exact spot I’m talking about. I’ve read of it causing lean/rich issues with tuning. Something about that cyl getting flooded with air from the bypass somehow. Mainly I read about tuning issues due to it.

 

[triple-s]

I've had both blowers and never experienced what you're talking about. My 2.1 was turned by lund and my 2.6 was turned by Eric Brooks. I was trying to find pics of my 2.6 setup but can't find them.

 

[Blkkbgt]

Let me start by saying I did try searching, but didn’t come up with what I was looking for.

I know that the 2.1 KB for the 2v motors have issues with the bypass being over the #5 cyl, and the problems that come along with that.

My questions is - does that change with the larger KB blowers, or does the #5 cyl still deal with bypass related issues?

I’m currently building my motor and will either go with the KB 2.6/2.8 or go Tork Tech and a Whipple/VMP. I’ve had a couple Tork Tech kits in the past, and while I’m not extremely enthusiastic about using another one, it seems like it might be the best option if the KB is going to cause issues.

Thanks for any input!

Can't believe I didn't see this sooner.

Yes the issues are still present with the larger KB blowers. Kenne bell in their idiotic wisdom kept the bypass valve in the same location on the new setups. They modified the intercooler feed/exit ports to clear the new inlet and didn't address the bypass valve issue. I remember years ago when this issue really first started popping up on the boards. Kenne bell first denied it was a problem and even made some claims that the fuel trim issues were actually problems with the tune. They later said that it is only really a problem with aftermarket cams and on stock cams the 2V was fine with the bypass valve pulling from above #5.

This is actually why I can't stand my 2.1. It's not the size of the blower its the bypass valve issues. There are some other problems with the quality of the manifold as well. I am aware of the issues with the tork tech kit but honestly if I didn't live in CA I would have sold my 2.1 years ago and went tork teck with a whipple or TVS but the 2.1 is my only smog legal PD blower option. To me this would be easier then relocating the bypass and upgrading the inlet. Maybe I would feel differently if they would offer us 2.1 guys an inlet upgrade but they would rather push us towards a larger blower to make more money. In their defense relocating the bypass and keeping the EGR system isn't easy but still doable.

To me nothing speaks more about a company and their mentality then when they make changes to their parts and ignore issues that they have admitted to. I'd go TT with a whipple 2.9 and forget all about KB.