murano3 wrote:Got to be more mods on it than that - my guess you've got no boost restrictor (does it boost off the gauge?) and probably an uprated ECU.
Got to agree with this statement, surely can`t get 347 bhp with just the induction kit and exhaust?
They're 280bhp as a gents agreement figure off of the production line. This is always known as a conservative figure. Equally the car is at least 12 years old so I'd expect power to run down a bit if it's on the original engine. Add an induction kit (5bhp) remove the cat (10bhp) and get a free flowing exhaust (10bhp)...............
You may well achieve 320 with standard boost, but the dyno sheet will back up your results, so everyones happy :thumb:
Seriously, i'd be a bit concerned - the reason I mentioned the boost restrictor is that when I first got my car it was savage - more than you would expect from a standard car - with a bit of investigation it turned out to be someone had removed the 'safety' from the boost pipe - i.e. there is a pipe that goes into the boost solenoid - it's marked by a yellow band - if you squeeze it you should feel a blockage - without it you are potentially hitting 1.4 bar peaks which will blow your head gasket or your turbo's.
Do you have a boost controller? or a boost gauge.
Dum spiro, spero
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A lot of platforms have these little restrictors in the line to hold the boost pressure down. A lot of people call the removal of this little gizmo the free boost mod.
My experiance of it is that it can sometimes cause boost spikes- not just a raised but stable pressure.
Best to check it is there, although thats a really nice number. Did the rolling road guy hook it up so he could see how much boost was produced? That might tell you the answer without even opening the bonnet.
All of this banter would be settled for the sake of a dyno print out. I'm really pleased that you got what seems like some great results, but I would ask that we really need some proof in the form of a sheet to continue this discussion.