Confused
Thread Starter
Instructor
Joined: Nov 2007
Posts: 246
Likes: 78
From: Niceville, FL
2021 C6 of the Year Finalist - Modified
Confused
Greetings folks....I have a question or two if you care to help. I have a 2009 base with 90k miles automatic. I recently had a metric *** ton of work done to the car. Stage 3 BTR cam, Brodix 280 (mueller) heads, LSXR 102 intake, NW 103 TB, Fast fuel rail, melling oil pump, radiator, fans, trans cooler. I already had long tube headers, xpipe (with cats), and corsa CAI, and a FTI 3200 stall. So long story short, I had all work done, and a solid street tune done but, wait for it....only knocked a tenth off my 1/8 mile time. 7.83 @ 91mph to be exact. So I took the car to a dyno tuner to see if they could knock the edge off of it and open it up. So on the first pull the car made a whopping 311hp.....he did some adjustments and the car made 351hp 331tq. He was scratching his head, because the car should be making well over 500 with this set up. He seemed to think the cats may be melted and clogged up. I plan on pulling the cats off this weekend to check them. Does anyone think there could possibly be anything else? The fuel, air, and timing are all good and the graph is perfect. I do still have the stock injectors and fuel pump but could the really be the limiting factor? Thank you in advance.....
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
Clogged cats can add huge restriction, so it's not impossible. I'd check that out first just to make sure. If it's not that then I think I'd be doing a compressions check or something to make sure nothing is hurt. That's a lot of power to be missing
