The customer is in a bad situation at this point. I hope this isn't the only response to him Sometimes its more important to do whatever it takes to help a customer and deal with the finger pointing later on.

 

Just an update on my situation and some further info...

I am not a mechanic nor do I claim to be one. EPP did a good job on the install of the APS kit as per APS's instructions. I think the kit as a whole is good but the MSD unit does seem to be causing enough people problems to warrant concern. Maybe it was just a bad batch, in any case we have decided to replace the MSD unit with a Kenne Bell unit and put in an 07 z06 pump.

We are setting the Kenne Bell unit to 30% which equates to 15V at boost as per APS's recommendations. I PRAY I don't have this situation again, not because of the 2k it has cost me so far or the two flat bed tow's or the headaches, but because I cannot put my wife at risk just driving down the highway that the car is suddenly going to stop running. This car is not used as a race car and sees little hard use. Sure I might gun it now and then from a stop light but that is about it. I purposely went with a conservative tune, low boost, etc, so I wouldn't have problems and with only 7k miles on the car, this is where I am. I will keep everyone updated, the car is fixed as of today and I will let everyone know what happens in the future. Thank you so much for your support and the phone calls, I won't go into my feelings regarding APS support (unless they choose to carry on in this post), I will leave that for you to judge on your own...

 

Glad you are up and running. I hope you dont have any further problems, and best of luck with the car.

 

Peter;

The problem is not that the initial setup is not being done correctly, but rather that there are a number of the MSD units that don't hold that setting over time. Here is a link to what Doug, the tuner previously used by LAPD, has to say: http://forums.corvetteforum.com/show...2&postcount=10

BJK

 

I have a KB and pretty much await the day it goes bad, so I have a valid reason to drop the coin on a high output system. The fact is they all go out with a BAP sooner or later.

 

that link didnt work for me... either way, with my limited mind, all i know is that the OP mentioned 6psi, APS's intstructions mention no more than 5psi for that particular setup.. but then again, i'm not a mechanic or tuner. i'm just another future customer of APS

 

I'm just wanting to make sure that the owner knows that there is a limit to the amount of voltage and that the voltage should be checked and adjusted. Many times I've seen that customers have not seen or read the install instructions. I'm just helping the owner by posting the link to the install instructions.

Peter

 

How much more fuel does the zo6 pump give? I thought you were at 6lbs of boost? Do you even need the bap?

 

Sir I am very sorry for your issues with the APS system. All who read your post can feel your pain and concern for yourself and you wife. Most all on this forum LOVE our Corvettes and it shows, but no one wants problems.

My overall experience with the APS Twin-Turbo has been good. Here is my story. I have a Silver 06/A6 (purchased new) that I drove from Va. to Dynotech (now DTE Powertrain) in Fort Wayne Indiana with 14,000 miles on the car. Phil and Co. installed the kit along with the first 315 gearset for the A6. The car now has 33,000 miles and the only issue I have is the seals in the scavanger pump leading a small amount.

I do not drive the car hard most of the time however I have been at the last 2 NCM at VIR HPDE's. Any who drive there Vettes on a road course event would admit its not "babying" the car. Other than issues with traction control (spinning tires at 100 plus mph) there has been no mechanical
problems. I did install a Dewitts radiator/cooler before this last event since engine oil temps were a little high. I have read with concern about the issues with the "boost a pump" and I will soon call DTE and talk to Phil about this.

I hope your issues will be resolved soon I can think of few things worse that being broke down in my Vette.

Good Luck and keep us informed.

 

I've never used the MSD, so I cannot comment, but the KB boost a pump uses a pressure switch to increase the voltage to the pump, ONLY when it senses 2+ psi of boost. This doesn't usually shorten the life of the pump, because you're not in boost all the time. If the MSD is increasing voltage all the time, then I could see it causing the factory pump to eventually fail as it would be constantly seeing increased boost.

Hope this helps,
Ed

 

I have used/installed literally hundreds of MSD baps, and never had one fail that I can recall. (I prefer everything in one unit) I guess I'm incredibly lucky?