Hey guys,

I want to get a new clutch in my AP2 with a stock boost vortech. My stock clutch is slipping in my 2-3 and 3-4 shifts. I do not plan on upping the boost this summer, but I may(very slight chance) get the itch to change pulleys next year (perhaps around 350 to 375 HP max)
This car is not my DD, and I do not get caught in traffic often. I do shift hard through the gears each time I go out, but I do not launch the car.

Questions:

1)I am looking at competition clutch packages. Is their stage 2 kit enough to hold the SC power? It was suggested that if I felt that stage was not enough, I should go to the stage 4 kit. Does anyone have any experience with the competition clutch to offer me any suggestions. I will also get an ap1 (lighter) flywheel to help the SC performance.


2)I just installed the T1R limited 70mm exhaust. I love the way it sounds! I have a 70mm invidia test pipe to still install. I am concerned about the car running dangerously lean with the TP. I read stories about the comptech SC having lean issues with exhaust mods. My AFR was around 12:1 the last time I got the car dynoed with the cat on. The shop placed the sensor at the exhaust tip, so who knows how accurate it was. My vortech AP2 kit comes with a 5th fuel injector to keep the AFR correct, and so far it has worked very well. Has anyone installed a test pipe/single on an AP2 vortech and had problems with being too lean.


Any suggestions would be greatly appreaciated.

Thanks

 

Competition clutches:

Stage 2 - Great for N/A to 300whp (long life and very streetable) - a bit more if you are S/C...about 350whp
Stage 3 - Great for 375whp-400 of abusive driving
Ironman - Holds over 500whp and can hold upto 600whp of repeated beatings. Extremely streetable for a puck style. Much easier on the drivetrain than most other puck styles as well.
Stage 4 - Holds about 450whp
Stage 5 - Holds upto potentially 600whp

 

I have the stage 3 competition now and I love it. Can be a little difficult from a stop but nothing horrible. Only way to tell with the test pipe is to put it in then dyno the car again and see where you stand.

 

this dyno was done with an ACT clutch and T1R Test pipe on stock boost..I have the AP2 Vortech kit as well..

 

I'm currently running a EMU, RC 550 with my setup. can't decide which exhaust to go with. I do have the 10 psi pulley installed right now, just need some time off from work to go to Socal and get this bish tuned.

 

If you are running lean you can recalibrate the FMU by calling Vortech for about $40.

 

sue at prostreet tuned your car? i havent been there since they closed up. nice numbers btw