[2URGSE]

I'm assuming any headers developed will have built in high flow cats???

 

[2URGSE]

I can't believe both Lexus AND Yamaha accepted such a pathetic design for an exhaust manifold. Granted there's no room, then make the f one. Geez!

I don't know this engine bay too well since I haven't bought an ISF yet, however the designers have to take into account smog and other regulations.

It would be pretty interesting to see the final product and the dyno sheets with Joe Z exhaust and intake in addition to the headers.

 

[2URGSE]

Those are numbers I would like to see. Perhaps we can crack the 400whp.

Considering I've seen 380 with the exhaust and intake, 400 is pretty much there once everything is installed/running.

* This will give the M3 (Perhaps some M5??) guys something to chew on.

I get the humor about the Pepsi can..........haha.

Researching this car is pretty fun.

 

[2URGSE]

My primary concern is losing torque. I definitely lost torque just from installing the Borla catback, and I'm afraid to lose any more? Do you think this is going to be an issue?

I don't see how you would lose torque when opening up the exhaust.

Get a base run on a dyno and see what the car is doing.