I haven't been on here as much since I bought my 2002 S2000....but I thought I might share something that I have been working on.

I decided there wasn't really any documentation regarding HP improvement the headers for the s2000 and so I decided to have one built.................ANd since I have access to a dyno...document it

Big thanks to Jeff @ Fast Forward for all his hard work on this

We tested it on both a AP1 and an AP2....


As you can see in the final chart...we made a little progress................




2002 F20C with 67k on the motor

AEM V1 CAI
Greddy 70mm single TiC
Invidia 70mm TP


only change is the header...no tuning


solid line is run file from the left
dotted line is run file from the right




Ok here is the 1st chart showing baseline versus the Fast Forward header














Here is the baseline vs the Fast Forward Header v 1.3













Here is version 1 vs 1.3








here is the current version.........

red line is the current header
blue line is the baseline/OEM header












Solid line is the file on the left and the dotted line is the file on the right



solid= FF header
dotted= OEM



















OK here it is.....the Final version of the OEM sized replacement header

we were pretty happy with the gains from previous version


Purple is Final version
Red is previous version







here is the overlay


Solid is Final version
Dotted is previous version











Here is OEM vs the Fast Forward Header


Purple is FF
Light blue is OEM









Solid is FF Header
dotted is OEM












AP2 results


100% Stock 2004 AP2 S2000 with 30k on it

Green Line is best baseline run vs
Purple line :best run with Fast Forward Header installed





After a few more runs we did a ECU reset........









before the ECU reset....we pulled the airbox lid off and directed cold air at the filter.....just for ***** and giggles...

BTW the fan was back aways from the box..not crammed up