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Here is a picture of the valve in place and then removed. There is a coil spring that goes between the electric motor and the mechanical part of the valve. The spring is not shown in the picture. It seems that the spring is designed to keep tension on the valve, so it doesn't rattle. This is on...

The different settings also change the fuel program along with the exhaust muffler valves. We eliminated the valves and removed the stock muffler and replaced it with race mufflers. So with the exhaust valves totally out of the equation it sounds different in the different settings. The most...

Unless you really enjoy using the sunroof, I would pass. I've seen too many of them leak due to the tiny drains getting clogged. I think a lot of people would reconsider getting one if they saw how they actually work. The water doesn't stay on the outside of the car. Some of it drains into a...

On this specific topic the 4 BW and the 5 BW act totally different. The 5 is much more of a handful. As you start experimenting with some tire spinning slides, remember that the car will react differently on different roads, so try and get a feel on the same surface so you can learn...

Does anyone know what tire LMP is running during those passes?

Gloss black powder coat for sure. Did a 5 that were satin graphite and also a 4 that were polished.

I’ve seen the guys hook up a monitor that records data as you drive, which they use to diagnose those intermittent problems. Not sure if it works on a Blackwing, but worth asking about. The usual procedure for a difficult repair is for the technician to work with an engineer at GM by phone. If...

I always find it funny how common it is that the "system" won't retain the info needed for a normal repair. We all know that the "system" would sure retain the info if it was related to extra boost added from let's say a smaller blower pully.

Thanks for the perspective! I want something to drive on all the time as the traction sucks on the street with the stock tires.

Those are what I was thinking until I read that they are really bad unless heated up. Does anyone have experience with the 305/35/19 from Nitto or MT? Is the 30 vs 35 really an issue? The specs show the overall diameter to be approx. 1 in taller than stock size.

What drag radials are you guys using with the factory wheels?

Definitely stock wheels. Must be a drag radial.

NTB - EMISSION SYSTEM FEDERAL Ordered as a Retail Sold Order Build Date: 07/26/2023

I believe the factory exhaust is 2 3/4 inch.

The Valves are located between the muffler and the tips. If you look under the vehicle, you will see the actuators. If you look in through the tips, you will see the actual butterfly valve. I totally agree that it needs different mufflers. As a side note, I was very surprised how much louder the...

Correct. What he describes as to how the car reacts to throttle input and sliding, is only the case with the 4. On a 5 it is so easy to slide the car around. If someone was used to 4 and got in a 5 they would have to be much more careful.

I'm right there with you! It's between the MT and the Nitto. Nitto has a matching tire you can get for the front. The 5 BW 6-spd definitely needs more traction in first and second. I'm a few weeks from making the switch.

As you read the responses, reference what car the responder has. (4 BW or 5 BW). When it comes to this topic the two vehicles act totally different.