Finally a Corvette update (I know, I know- you’ve all been waiting for this…not)!
In another post I mentioned that I had gotten my car back from Premier, but there were still a few issues. Since I’d had a good experience with RaceCo (Porsche) I decided to let them take a crack at my Vette.
They pressure tested everything and discovered that the blow off valves were popping open around 12 PSI. I was disappointed that this issues hadn’t been identified before, but it was a good find. RaceCo rebuilt the BOVs so there wouldn’t be any more boost related issues. Vince and I had always thought the car should boost to more than 12-13 PSI so we were curious what this fix would yield.
After making sure every leak was plugged RaceCo told me the car seemed to run better- it started fine, the surging was reduced and they didn’t experience any stalls. They also replaced a melted 02 sensor and added more heat shielding.
Next was the boost controller. For whatever reason there were intermittent sensor errors and the boost pressures weren’t accurate. RaceCo got in touch with the manufacturer and they helped them trouble shoot and sort through the issues (one wiring, and one plumbing).
With the boost controller working properly it was time to do some testing. On high boost the car made it to 16PSI without breaking a sweat (that’s where the boost controller is currently set- when things warm up again I’ll be curious to see how much higher it goes… I’ll probably have to upgrade the fuel system for that). With 940rwhp on tap at 13 PSI I’m positive I’ve broken the 1000rwhp goal at 16PSI. The car is nasty fast on high boost. It just pulls and pulls. It’s hard to describe…
The drivability of the car is finally to a point where I’m comfortable with it (although there are obviously traction issues on high boost). I’m still not sure if I’m a fan of the aluminum flywheel- my only gripe is that the car is tricky to get moving from a stop. I think I’d like to get the car converted over to a speed density tune, but for the now the MAF tune is working fairly well (and it has the advantage of being OBDII complaint). Yes, the project took way longer than I thought it would, but ultimately I’m pleased with the results. No regrets.
Now I’m in the process of taking care of a few other little things. For example, the car needs a massive cleaning inside and out. Polishing out the hard water deposits (rain then sun) will be a good winter project.
While I was in Provo the other day I drove through a construction zone. There was a massive bump in the road and I got one of my air hoses under the car ripped off again! I fabricated some shields for them this time. Hopefully they take the brunt of the next impact instead of my poor hoses.
One of my RCA cables has been giving me grief. The end developed an issue and ultimately I had my friend Jim put on a new jack. That temporarily solved the problem but in the end I got hungry for more.
Initially I bought new Monster Audio RCA cables. Then I also decided to upgrade the head unit with a Pioneer AVIC-Z150BH and add a back up camera. And I was getting pretty sick of my Beltronics radar detector suction cups giving out so I figured it was time for an integrated STIR-Plus system too.
This time around I didn’t feel like doing the install so I had Travis CSDAudio take care of it. He did a great job and I’d recommend him if you’re looking to have any car audio done. In the end I pulled out the center console to adjust some wires, but that was a piece of cake.
The Pioneer AVIC-Z150BH seems to be an excellent receiver. It’s a little glitchy since it doesn’t really support iOS7 at the moment but I think that will get resolved. The audio it pumps out seems like a huge improvement from my AVICZ1 which kind of surprised me. Travis assisted me with some tweeter tweaking to eliminate the sibilance as well. Overall I’m very happy with this stereo upgrade- I would rank my system among the best I’ve heard. And no ground loop!
The Beltronic STIR-Plus system also seems to be excellent. I’ve got the display screen and a warning light mounted on top of my steering column (I may need to black out the backside of the LED bulb as it reflects of my gauge cluster) and operation is simple and discreet. The sensitivity seems to be as good as, if not better than, my old unit.
Finally I had our graphic artist here at work make me a customized sticker for the car since I’m trying to stick with the red and black theme (our blue and white logo just wasn’t working). This is the first prototype; It was a monster to get on but I think it turned out pretty good.
What do you know? Sometimes cars are fun!