There are already a few threads here that Brian posted with pictures and dyno results, but here are the sheets for those who might be interested. I'll apologize in advance for the quality, these are pictures taken of the paper dyno sheets themselves.
The car is an S13 coupe. Engine is an S13 redtop SR20DET, stock turbo (T25) stock boost (running off the wastegate) stock injectors (370s in this case), MAF, etc. Only mod is a Nismo FPR, but it's set at stock fuel pressure. Supporting mods include:
Greddy FMIC
Megan "big mouth" turbo outlet/O2 housing
Topspeed 3-inch downpipe
Catco 3-inch cat
Veilside 3-inch exhaust
The runs were on a Mustang dyno, supposedly more accurate than a Dynojet but I'm starting to think that dyno numbers only give you a point of reference against changes made to your own car, and that if you want to compare to another vehicle you might as well just race.
Mustang run:
![Image]()
Same dyno, but recalibrated to Dynojet numbers - pretty much the same graph moved up a few steps:
![Image]()
Of course, the Dynojet numbers are cooler
I'm very pleased as I did not expect necessarily to break 200 hp. The car behaved itself very well, no strange noises or overheating at all. I don't have an A/F sheet because the guys at Raceline had a hard time getting the wideband sensor to stay put in the tailpipe, and I have no bung for a wideband anywhere in the exhaust. They did take a reading on one run and it appears that the car is riching out a bit as the revs climb, which leads me to believe that even at this boost level there's a bit more power to be had with SAFC tuning or similar, but I'm debating whether to bother with that before upgrading the turbo (someday, no concrete plans). I'd like to get a boost controller to see what can be done with this turbo, but that also remains up in the air.
All in all, it was a good day and I'm very pleased with my car's performance. Driving home was even more fun than usual...
The car is an S13 coupe. Engine is an S13 redtop SR20DET, stock turbo (T25) stock boost (running off the wastegate) stock injectors (370s in this case), MAF, etc. Only mod is a Nismo FPR, but it's set at stock fuel pressure. Supporting mods include:
Greddy FMIC
Megan "big mouth" turbo outlet/O2 housing
Topspeed 3-inch downpipe
Catco 3-inch cat
Veilside 3-inch exhaust
The runs were on a Mustang dyno, supposedly more accurate than a Dynojet but I'm starting to think that dyno numbers only give you a point of reference against changes made to your own car, and that if you want to compare to another vehicle you might as well just race.
Mustang run:
Same dyno, but recalibrated to Dynojet numbers - pretty much the same graph moved up a few steps:
Of course, the Dynojet numbers are cooler
I'm very pleased as I did not expect necessarily to break 200 hp. The car behaved itself very well, no strange noises or overheating at all. I don't have an A/F sheet because the guys at Raceline had a hard time getting the wideband sensor to stay put in the tailpipe, and I have no bung for a wideband anywhere in the exhaust. They did take a reading on one run and it appears that the car is riching out a bit as the revs climb, which leads me to believe that even at this boost level there's a bit more power to be had with SAFC tuning or similar, but I'm debating whether to bother with that before upgrading the turbo (someday, no concrete plans). I'd like to get a boost controller to see what can be done with this turbo, but that also remains up in the air.All in all, it was a good day and I'm very pleased with my car's performance. Driving home was even more fun than usual...
