hey all.
this is one for all you single turbo 1j guys out there.
just put a blitz k27 kit on my car and need to know how much boost i need to hit the 400 rwhp mark.
currently make 320 rwhp on 18psi on a soft tune untill i sort all the bugs out.
so how much do i need?
Roland
i would certainly make sure you sort the tune before sticking too much boost in it .
really it should all be done at once on the dyno
but for a rough guide i dont have exact spec of that turbo but if its the same as the sepecs i have if 18 psi = 320 rwhp then assuming manual transmission then 20 psi should equal just on 380 so 21- 22 should get close to 400 .
but 400 rwhp is pushing this turbo about as far as it can go
but this all depends on if you are running stock ignition system
The factory ignition system is a little pissy for that much boost
and assuming you are running a fairly high flowing exhaust
ie 3.5 inch with no or twin cats
in regard to tune your goal should be to make as close to 400 h.p as possible with as little boost as possible .Sort your shit then up the boost doing it in reverse is an engine failure waiting to happen
thanks for that guys. the boost will not be uped untill it is on the dyno. no doubt about that i just neeeded a figure to work from. the car has autronic smc and cdi units and a 3" mandrel bent exhaust. so thats all covered.
Thanks again
Tue, 27 April 2004 08:35
