Quote:
Originally Posted by Patrick G
Jet,
The driveability portion of the tune is pretty much done.
Backfiring under load: Gone. Could not be solved with a MAF-only tune like you had previously. You needed the VVE tables to cover a lean spot between 2000-3000 rpm. The VVE tables had to be extensively modified then re-engaged. You now have both VVE tables and MAF working together up until 4000 rpm. Just the way GM had it from the factory.
Hanging idle: Gone. Took lots of massaging. The FAST 102 and 102mm TB pose their own set of challenges for tuners, but yours is nice now.
Bucking and surging: Gone above 1400 rpm and very slight below that. You can crawl in 1st gear with the a/c on and cruise in 6th gear at 1200 rpm and not have any issues.
A few mechanical issues needed to be addressed. The PCV/catch can was not set up properly, but is now. The FAST intake had very loose bolts which might have given a little bit of a vacuum leak. It's all torqued down now. 
Let me know if you want to pick it up now or wait until after the Katech tensioner and new belt is installed. |
The Katech Tensioner should be there tomorrow I believe. It was sent out on Monday, and was 2 day shipped. Just have to figure out belt length. So might as well wait on that. If it is okay to come pick it up on Saturday, I will just get a rental car and head that way. Just have to drop the rental off and head back when I get there. Thank you so much for all the work and getting my car back in shape and now can at least enjoy it.
J
