Stock exhausts

[nikos]

Does anybody happen to know up to what power the 325 stock exhausts is good for?

[Jhonno]

Player6's 260bhp M20B28 uses a standard centre section i believe, standard exhausts are pretty good

[e30_Turbo]

Player6's 260bhp M20B28 uses a standard centre section i believe, standard exhausts are pretty good

Pretty sure he has BTB manifold tho......

From my experiance with stock and now 3 inch straight through, the stock exhaust is very restrictive for over 250bhp, my reason for saying that is before the upgrade I had backpressure issues which prevented spool till about 4k, now it'll show boost @ 2.5k.

I guess I'm chucking more air through mine than most but the effect the change has had is massive, the turbo's characteristics has changed and for the better too

There is plenty of room for a bigger pipe or two under the car, it's just the damn steering linkage that gets in the way.

HTH, Mark.

[nikos]

thank you Jhonno and fozzymonster for your helpfull answer.