
If you ever wondered what the performance gains (most notably, horsepower gains) of I/H/E (Intake, Headers, Exhaust) were, wonder no more.
Over at Import Tuner (click the source link for the article), they’ve taken a 1994 Honda Del Sol S with no engine modifications (in fact, I believe the only modification was the rims), and take some numbers before and after doing some modifications.
The article is extremely informative, even stating the ambient air temp.
Test Information
Owner: Import Tuner
Dynamometer Model: XS Engineering Dynojet 248
Air temp @ 68 Degrees Fahrenheit
1994 Honda Del Sol S (D15b7 engine)
Baseline (Peak) Horsepower: 92.4
Baseline (Peak) Torque: 94.2 lb-ft