Got a tune yesterday at Secret Services in Houston. The numbers were somewhat disappointing, but expected. I am very pleased either way and can't wait to get it out on the track next weekend!
The last pull we settled on was:
330whp305trq1.5 bar of boostSunoco 104 octane race gasNGK 7 heat range plugs gapped .016
We all were expecting around 400hp based on the older numbers I saw with the previous owner. The numbers were low because of a few reasons. The temperatures inside the shop were hotter than hell, probably around 110+ degrees during the tune. When it felt good to go outside into the hot weather you know it was hot inside. I wanted the tune to be conservative to try and make the engine more reliable to beat on it drifting, so didn't have it peaked out or bump up the timing too much. The tune was also a bit rich to compensate for the new tubular manifold which will make things lean out a bit. Also, the current modified stock manifold choked the whole system. After 21psi we tried to bump up the boost, but that didn't make the HP numbers rise. Its a POS. Finally, it was on a Mustang dyno which tends to read a bit lower.
All in all I'm happy with the results and it isn't all about peak hp. The engine pulls strong and hopefully will be reliably driftable now. The guys down at Secret Services were very knowledgeable and looked to have set down a great tune. We'll see how she holds up on the track!
Now for pics and vids...
On the Mustang dyno at Secret Services
Strapped in and some airflow
As I said it was hot as hell. The tires were sticky from the heat on the rollers.
Last pull printout. I think the highest pull of the day was 349hp, but that was before the tune was tweaked to how we wanted it.
And now for the crappy cam videos, still sounds awesome though:
Mid day dyno pullhttp://
www.youtube.com/watch?v=L_PpwXT5EvQ
Pull with readoutshttp://
www.youtube.com/watch?v=9mfTNmUFFOc
Low boost testinghttp://
www.youtube.com/watch?v=00zcdbbJZk4
Modified by chixwithtrix at 12:47 PM 7/12/2009