Fast Intentions Stage 2 TT build by MA-Motorsports.

Spooler

My thoughts on cam selection.
Everyone knows we have a limited selection of cams and then it is only for the exhaust side. They are not known to make great power levels on a NA car but for a boosted car you would use them for a different reason. To move the power under the curve around to be more suitable for your turbo selection. If you have larger turbo's you would want a cam selection that would move the torque more down in the lower rpm levels to help spool the turbo's and then to keep air moving up top and not fall off. Looking at the dyno graphs for the
JWT C1 cams we can see that it really moves the torque curve more down low. This would be an excellent choice for a turbo car with large turbo's (GT35's or larger). It would help to spool the turbo's quicker and reduce lag. I have selected the JWT C2 because my turbo's are in the middle. The biggest reason for me using these cams was stated in the thread about them. He stated that he doesn't have to downshift to pass a car. This to me was an eye opener. The one thing I can't stand about the power deliver of my car is it is flat between 2500 to 4000 rpm. If these cams can improved that area of the rpm range, I am all in. That is why I have selected these cams. So, on my dyno graphs I will be looking for a response between the 2500 and 4000 rpm area. Not sure how well they are going to work but we shall see. It's cheap to put them in when you are building an engine.

So what do you gain with exhaust cams? You gain drivability.