I have quite a few modifications as one can see. I run the truck mostly at Irwindale which is only an 1/8 mile but that is all we have in Southern Cal. My Jeep typically runs 60's of 2.059-1.94
........330's of 5.66 to 5.55
......1/8 of 8.671 to 8.544.....mph 80.9 to 82.4
. I typically run at night when temp get in the 60's and had a few 58's.
GSM installed the phenolic spacers yesterday and i was pretty skeptical. Today I went to Irwindale early and made my first pass at 5:13pm and the temp was 72 and sunny. My first pass was a 60' of 1.90....330 of 5.50...1/8 of 8.49...
quite an improvement.....I immediately backed it up with a 1.91 / 5.47 / email@example.com
NO WAY...from a spacer!!
For the final run I removed the factory reflashed TCM and reinstalled the GSM TCM
.......the next run was 60'-1.87.....330-5.45......8.44@ 82.39
.....the temp as it got later stayed at 70 degrees.
In summary, the freakiest, cheapest mod I have ever made resulted in quite a performance improvement. A new member from the OC site dropped by there (Hemi@last) and witnessed the improvement. In the box I could light up all four corners...i swear! He is my witness.
The GSM tranny box is also a keeper over the factory reflash. I can manually upshift and the shifts are way better than stock. The converter flashes higher and the shifts are right now
. The tranny shifts at 6100-6200 vs 5800rpm and drops back to 4800rpm rather than the 4500rpm previously and bangs right up to 61-6200 and again shifts like clock work!! These TCM's are not being flashed in country and my E55 TCM is going to them as soon as I pull it out!
Again you cant lose with the Phenolic Spacers as far as bang for the dollar.
Dyno next Wednesday at XS Engineering where I did the back to back stock vs mopar exhaust. Although now I'll see what the Kooks and Phenolic Spacer do for me.