I have a stock clutch in my car, making 350rwhp right now. Cooler weather is coming soon and I plan to go back to the shop and turn them up (BNR twins) on race gas until we lose efficiency.

This will be in the 400hp or slightly higher range projected.

Will the stock clutch at least handle the 4th gear pulls on the dyno without slippage at those power levels?

If not, I will upgrade to one that will before we turn it up.

Clutch doesn't slip now, but I did slide it out(a little too much as I was wearing flip flops) one time leaving harder at a stoplight and smelled it right afterwards, but that was before we dyno tuned it at it's current boost level.

 

The stock clutch is actually pretty good on the FD. But, with that much power you're on borrowed time with it. I would definitely look into a new clutch.

I have the Exedy Stage 1, absolutely love it. Just a tiny more pedal effort, super easy to drive, OEM quality, and holds up great. But, if you're going for 400 on the BNR's you may need something a little beefier. I'm a big fan of Exedy products.

If it will slip on the dyno is a big question mark. If you're lining up a tuner and expensive dyno time I would probably get the clutch done first so you don't get into the tuning process and end up with a car that's slipping and isn't tunable.

Dale