Sunday, February 25, 2007 - 10:59 am, by: Phil Gibson(Sciflyer)
Finally got her on the dyno and this was the result
202hp = 151kw
Now according to Planetsoarer this is a pretty good result for a stock engine, stock ECU, n/a car, it mightve been a touch higher had i remembered to turn off the EMV and auto headlights...
I dont know what gear the run was done in but it was with TRC and OD off.
But i have some questions - First, i thought the V8s didnt make peak power at the rev limiter?
Monday, February 26, 2007 - 03:07 am, by: Peter Nitschke(Pen)
Phil, the headers would be giving you maybe 10-15 rwkw, so the results are in line with other V8's.
Rev cut is 6400 (on mine at least) and 3rd will pull over 180kph which is why there can be gear change issues when a speed cut remover is fitted.
Your TT ratio diff will be making a difference, but not that much, TT 4.08 - V8 3.92, which is about 4%, so your graph cut would have been at 165kph with a V8 diff - still well below where it should actually cut.
Monday, February 26, 2007 - 07:13 am, by: Mark Northcott(My91gt)
Yeah but look at the AFR that's running RICH as, for a pretty much standard ecu it's sending a •••• load of fuel into that engine that doesn't need to be there.
Although every car is different only cars I've seen run that rich are turbo's.
Drops down to 11's in the AFR
Drops down to 12's in the AFR after ecu was de-bugged which was leaving injectors open, also reading false airflow readings, plus other things.
But if you concerned I'd be just going back and talking to the guys and see what they say. Best opinion is a professionals one.
Monday, February 26, 2007 - 02:02 pm, by: Phil Gibson(Sciflyer)
Thanks Peter and Mark for the thoughts.
I think more will be revealed on Wednesday when i take her for a run at the drags - i think that perhaps that km/h figure is not accurate, and im pretty sure i dont have any ECU issues like premature rev cut ;)
That dip in the power is not noticeable in the car
The AFR i dont look at as being abnormal, obviously its stupidly rich but then thats typical Toyota, i do have a Walbro fuel pump in there at the moment so maybe its pushing more fuel through when in open loop
Mark i get good economy when light driving/cruising but as im a bit of a leadfoot at times i havnt bothered to check fuel usage when ive been caning it
Monday, February 26, 2007 - 02:49 pm, by: Benny Gammelmark(Oldfield)
My dyno chart looks a bit similar, not quite as pronounced a dip, but I have a chip in mine and mine IS running rich.
I think it could depend a bit on the gear they use as well. I have two very different graphs from the same car, done two different places. One looks a bit like yours and the other one is smooth as. They got to about the same max power figure.
I had about 161rwkw before the chip so 151 is quite normal.
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