S-afc On Its Way, Anyone Tune Your Self?
08-10-06, 12:59 PM
#32
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dyno day
Dyno was done on DynoJet
outside temperature at 88 degrees and Humidity at 60%
humidity and higher temperatures probably reduce around 2.5% of engine output. Thats around 5hp and 5 trq so corrected numbers are around 212rwhp and 235rwtrq
Initial Hp was at max 201rwhp and for some reason Tq did not get measured.
Air/fuel ratio was way too rich, so rich that it was off the charts at 10.8 and going lower off the charts
After tuning with S-AFC max power 207.1 rwhp and 229.7 rwtrq
Air/fuel ration at around 13.0
Even though the peak hp gain was only 6 rwhp, at higher rpms there was gains as much as 15rwhp and probably around the same torque but I can’t really say for sure since on the base dyno torque did not get measured.
outside temperature at 88 degrees and Humidity at 60%
humidity and higher temperatures probably reduce around 2.5% of engine output. Thats around 5hp and 5 trq so corrected numbers are around 212rwhp and 235rwtrq
Initial Hp was at max 201rwhp and for some reason Tq did not get measured.
Air/fuel ratio was way too rich, so rich that it was off the charts at 10.8 and going lower off the charts
After tuning with S-AFC max power 207.1 rwhp and 229.7 rwtrq
Air/fuel ration at around 13.0
Even though the peak hp gain was only 6 rwhp, at higher rpms there was gains as much as 15rwhp and probably around the same torque but I can’t really say for sure since on the base dyno torque did not get measured.
Last edited by Lexusalex; 08-10-06 at 02:15 PM.
08-10-06, 02:14 PM
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Originally Posted by PHLSingle
I can hardly belive how far off topic some of the replies here are.
The guy was asking about a friggin AFC!! Go out and street tune the low "driveability" map on an AFC and see what the stock ecu does to that after 20min's.
Bottomline, the AFC is ONLY good for WOT tuning or damn close to it. There is absolutely no point to trying to tune low throttle/low rpm using an AFC piggy backed to a stock toyota/lexus ECU. The stock ecu is going to remap any changes you do to low throttle / low rpm changes.
If he had asked about a full stand alone...different story...but he didn't. These are not gueses, this is the way these ecu's work or at least have since i got my first Supra back in 1998.
Jay
The guy was asking about a friggin AFC!! Go out and street tune the low "driveability" map on an AFC and see what the stock ecu does to that after 20min's.
Bottomline, the AFC is ONLY good for WOT tuning or damn close to it. There is absolutely no point to trying to tune low throttle/low rpm using an AFC piggy backed to a stock toyota/lexus ECU. The stock ecu is going to remap any changes you do to low throttle / low rpm changes.
If he had asked about a full stand alone...different story...but he didn't. These are not gueses, this is the way these ecu's work or at least have since i got my first Supra back in 1998.
Jay
01-11-07, 06:50 AM
#38
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And will it be able to compensate for fuel if the car is boosted? Thanks
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