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We'll the Header test was a success and is finally over. We are going to compile the data this week and release the results ASAP. For those that are waiting to see how their header did, don't worry all headers were impressive and very comparable. Ryan, thanks for the use of your ITR, it proved to be very strong. The baseline on his car proved to be 176 hp/119 tq, very respectable for a fairly stock ITR. The highest header reached a peak of 190 hp and the lowest was still a respectable 185 hp. As you can see we will have to resort to laying out the data to see which header performed the best throughout the powerband.
Header Results: Individual Dyno Results
JDM Jun download --- View    HP/TQ 186/ 138
JDM Spoon download --- View    HP/TQ 187/ 138
JDM ITR 4-1 download --- View    HP/TQ 185/ 137
Mugan mod. hytech download --- View    HP/TQ 187/ 136
DC JDM 4-1 download --- View    HP/TQ 187/ 137
Comptech 4-2-1 download --- View    HP/TQ 187/ 137
JDM Toda download --- View    HP/TQ 190/ 137
JDM Mugen download --- View    HP/TQ 186/ 135
SMSP header download --- View    HP/TQ 190/ 136
Type 1 download --- View    HP/TQ 186/ 137
2.5" exhaust/test pipe download --- View    HP/TQ 180/ 131
Stock download --- View    HP/TQ 176/ 119
SMSP / Toda download --- View    Overlay ----NEW
DC JDM / Type 1 download --- View    Overlay
Next???? download --- View    Overlay
Check back soon, we will be posting some info on the Mustang Dyno and explain some differences between them.

Here's some pics. If you have some, we'll post them here. Send them to:>


Please Note: We will Release an Excel File that will allow you to compare different Headers on one graph. I will post some overlays of some similiar headers shortly. But please be patient.

We will be releasing an Excel file soon.

Automotive Performance Engineering
44297 Macomb Industrial DR

Clinton Twp. 48036



44297 Macomb Industrial DR.
Clinton Township, MI 48036

9 am - 5 pm Monday - Friday
Saturday by appointment only


Performance Enhancements for domestic and foreign autos, trucks and SUV's