ZexGX
03-26-2012, 02:14 PM
Finally got my forged 347/Xtreme Lvl-2 4L60E setup tuned at CMS after driving around on a street tune for almost a year. Link to detailed build info at the bottom of the page. The drivability and MPG is noticeably better. Car feels much quicker, now that the transmission shift points have been corrected and the car is making more HP/TQ than it was the street tune. The motor also doesn't stall or try to stall when shifting into Reverse like it used to with the street tune. I should have done this much sooner for the drivability issues alone... I'm very happy with the tune and how the car drives now. Car made 355rwhp/350rwtq an Xtreme Transmissions 4L60E + billet 3200 stall converter and stock cats. It is forged with future forced induction in mind (just need to change cylinder heads). For comparison, a friends car made 366rwhp on the same dyno, with LS6 intake, milled stock 241s, 228R 112LSA cam, longtubes + ORY, through a 3800 stall, Xtreme built 4L60E and old O2 sensors, and was running 7.4s at Irwindale.
"Stock" LS1 setup: http://img.photobucket.com/albums/v91/ZexGX/Car/D_30044.jpg
New setup:
http://img.photobucket.com/albums/v91/ZexGX/Car/548434_10150775345347931_672487930_9486618_2093951 584_n.jpg
I took it to get smogged a few days later in the high desert (it's registered out there, and the smog tests are less strict). It passed the visual, and then passed the sniffer just like when it was stock. Big thanks to Ryne for tuning it to run properly & efficiently:
http://img.photobucket.com/albums/v91/ZexGX/Car/smogtest2012.jpg
The motor was not built by CMS (they should be able to get way more power out of a smog legal NA build if you were to ask them to). It is cammed, forged, and built for boost (up to 750whp), and has on it a set of unported 241s that had been milled 0.045" to compensate for the dish on the pistons until I go FI and I change the heads to drop compression. Should be roughly 10.3:1 SCR right now, DCR is within recommended range.
Full build list here: http://www.fquick.com/garages/viewvehicle.php?id=30044
"Stock" LS1 setup: http://img.photobucket.com/albums/v91/ZexGX/Car/D_30044.jpg
New setup:
http://img.photobucket.com/albums/v91/ZexGX/Car/548434_10150775345347931_672487930_9486618_2093951 584_n.jpg
I took it to get smogged a few days later in the high desert (it's registered out there, and the smog tests are less strict). It passed the visual, and then passed the sniffer just like when it was stock. Big thanks to Ryne for tuning it to run properly & efficiently:
http://img.photobucket.com/albums/v91/ZexGX/Car/smogtest2012.jpg
The motor was not built by CMS (they should be able to get way more power out of a smog legal NA build if you were to ask them to). It is cammed, forged, and built for boost (up to 750whp), and has on it a set of unported 241s that had been milled 0.045" to compensate for the dish on the pistons until I go FI and I change the heads to drop compression. Should be roughly 10.3:1 SCR right now, DCR is within recommended range.
Full build list here: http://www.fquick.com/garages/viewvehicle.php?id=30044