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Originally Posted by vbeachboy,Jun 9 2006, 06:25 PM
Just to clarify, 4th gear on an AP2 tops out closer to 102-103mph in a real world application. But I definitely agree... I love the final drive of the stock AP2.
I'd get a reflash if it were available for the 2004 S2K though.
thank you!
i think 79 in 3rd and 99 in 4th is shifting at 8k.
all i want is for the car to keep in gear a little longer than 2200rpms. if they can alter redline to 8500rpms then that should lengthen shift points by 3-4mph.
Originally Posted by TRDLiquidSilver,Jun 10 2006, 12:09 PM
all i want is for the car to keep in gear a little longer than 2200rpms. if they can alter redline to 8500rpms then that should lengthen shift points by 3-4mph.
I guess you guys are not understanding this. Redline has been altered to 8500.
I see, but I wonder why the bottom line in the stock versus ecu dyno (on the left) looks just like the bottom line in the mods only vs ecu + mods (on the right).
Results for 06 S2000 with exhaust and Hondata Heatshield gasket - Left
Dotted purple line - Reflashed ECU
Dotted green line - Stock ECU
Results for 06 S2000 with Toda Header, test pipe, exhaust and Hondata Heatshield gasket - Right
Dotted red line - Reflashed ECU with Toda Header program
Dotted green line - Stock ECU
So, is the dotted green line for just the exhaust and gasket or does that include the header and testpipe? I'm a little confused.
Dotted green line: Invidia exhaust, Hondata IMG, Toda header, J's Racing straight pipe, stock ECU
Dotted red line: Invidia exhaust, Hondata IMG, Toda header, J's Racing straight pipe, Hondata reflash
That's what I thought as well. The two dotted green lines look exactly the same, don't they? So should I conclude then that adding the Toda header and the J's racing testpipe does absolutely nothing for the torque? Interesting. Thanks for the clarification.
Originally Posted by Bo_Vien,Jun 10 2006, 03:10 PM
That's what I thought as well. The two dotted green lines look exactly the same, don't they? So should I conclude then that adding the Toda header and the J's racing testpipe does absolutely nothing for the torque? Interesting. Thanks for the clarification.
I cannot comment for sure either way. The only thing I can say is that adding a header to an S2000 allows you go lower the VTEC engagement point because it does allow you to gain to lower end torque. If you lowered the VTEC engagement point and did not have a header you would loose power and your car would be a dog.
No, you don't. Hardly anyone who puts on an aftermarket header goes out and "tunes" the car. The MAP sensor and the header O2 sensor will tell the ECU how to run the engine based on what they see. You don't have to tune anything. That's just needless time and expense and is overkill.
The O2 sensor is for part throttle operation and does not affect full throttle fueling.
The MAP sensor tells the ECU the intake manifold pressure and not the volume of air. It does not compensate for the changes in backpressure and different pressure pulses the header delivers.
Study the web site carefully. You will probably come to the conclusion like I did that the header and and the reflash for the stock S2000 are not high on the bang for the buck list as individual items.
Combine the TODA header and reflash and the results are much better.
Actually, the best bang for the buck is the $50 Hondata heatshield intake gasket. My tests show it averages 2-4 ft pounds torque across the entire rev range - more than the Toda Header.
