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.
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
The article even lists HP improvements in different RPM ranges, and includes dyno charts with SAE corrected HP levels.
- 92.4 whp
- 94.2 lb-ft
- Injen Intake
- 95.5 whp (+3.1 whp)
- 97.1 lb-ft (+2.9 lb-ft)
- $180.00 MSRP
- Skunk2 Exhaust
- 99.4 whp (+3.9 whp)
- 99.3 lb-ft (+2.2 lb-ft)
- $638.00 MSRP
- DC Sports Header
- 102.9 whp (+3.5 whp)
- 101.8 lb-ft (+2.5 lb-ft)
- $395.95 MSRP
- 10.5 whp net-gain
- 7.6 lb-ft net-gain
- $1,213.95 MSRP
So, what do you guys think? Was it worth it? Leave a comment and tell us what you think.
Either way, we now have raw numbers to help justify our purchase and choose what route to take when upgrading.