Soon to become: Jake_XR6
Join Date: Dec 2001
Location: Melbourne (eastern)
LPG mixer removed - Less power !!!
I was going to post this a while back but forgot...
At a recent XR6T Dyno day in Bayswater, I got my VCT on the dyno
and it dynoed at 142 rwKw's. My car is on LPG, so for the second run I decided to play around and remove the LPG mixer from the intake pipe.
(I taped up the hole with tape nicely).
Now the funny part is that I expected more power, since the mixer
nearly halves the intake diameter of the pipe.
Anyway, I lost 4 kw's - amazing.
The guys at the dyno were scratching their heads, and one of them said that I should have reset the ECU to be fair to the test, since my A/F ratio was what was suffering. Anyway, my conclusion is that intake modifications ie. trying to get more air flow into the engine, seems to me to have little (if not the reverse) effect !!!
Any thoughts taximan and others....
Wheels: 17" Series 1 XR
Exhaust: VCT with no resonators & 3" mandrel from mufflers back, dump pipe
Pacemaker headers (Waste of money).
Air Intake: T-Series, K&N Filter.
Brakes: Calipers painted red, DBA slotted rotors & Lucas pads.
Fuel: Dual Fuel.
Dyno: 143 rwKw (Dynodynamics - shootout mode).
Heathcote: 15.87 @ 89.1 Mph.