Engine died on high RPM shifting?

[Robotech]

So there I was. Driving my 1999 GSX which was built by another guy who on this forum is known as "phunny", tuned to 635whp, as I normally do in my normal circuit around the neighborhood. I was driving it down the street shifting between 5500-7000 which is normal for this car since with the FP black turbo its the normal power band for it. Car runs on E85.

Anyways, I drive through a part of town which is 30mph, get through it, throw it into second, rev it up to 7000 rpm, put in the clutch, shift to third and something goes wrong-- the engine just shuts off. So I'm only doing about 40mph, so I'm rolling, saying WTF? RPM is at 0. I was already pushing in the clutch so I turned the key, engine turns over, nothing. Still rollin, about 10mph so I put it in second and dropped the clutch and it sounded like the car started but the RPM said 0 still, so I rolled off to the side of the road and there she lay.

First thing I checked was the timing belt, which is fine and it wouldn't have turned over if I blew the belt anyways.
Car cranks over but never fires. The fuel system has a PSI gauge on it and it shows 40psi, so I have fuel when I crank the car over.

Seems like there is no power. I just plugged in a code reader and it didn't even turn on. Seems there is no power/programming to the ODB2 port when the ignition is turned on or off. The car had something else plugged into the ODB2 port, maybe the control for the ECMLink? don't know.

First, has anyone ever had this happen and do you have any thoughts as to WHY it happened? To me it seems like I'm getting nothing from the computer. Could I have magically cooked the computer while shifting at 7000 RPM? In a super built GSX are there any safetys that would shut off the car at 7000 rpms and then not allow it to reset and restart?

Is there any fuses or things to check in particular?

And this car used to be quite popular in the racing circuits and at the shootout, it was built by "phunny" but he won't answer phone calls and texts now for the last 6 months even though he said he would if I bought his car. But maybe some of you know this silver GSX.

Thank you in advance my friends. My heart is broken without my GSX.

 

[Robotech]

I've had this happen to me too, the '97-'99 CAS connector wasn't making a good connection at the CAS so, during high RPM shifts or during a hard launch at the track, the ECU would lose the CAS signal. I used my DSMer ingenuity and zip-tied the connector to the CAS and it hasn't happened since.
Since you seem fairly new to your 2g, here's a screen shot of the connector I'm talking about...

Thank you for this information I'll check it out when I get home. I appreciate all of the wisdom that you both have been sharing with me, this has been very helpful. I am new to DSMs, starting out with a 635 whp monster, built by someone else, that is so custom nothing matches up with the OEM schematics But I'm learning fast since this stuff is really cool to me. I'm missing my DSM though, its so fun to drive.

 

[Robotech]

I've had this happen to me too, the '97-'99 CAS connector wasn't making a good connection at the CAS I used my DSMer ingenuity and zip-tied the connector to the CAS and it hasn't happened since.
Since you seem fairly new to your 2g, here's a screen shot of the connector I'm talking about...

Thank you both for your wisdom. I will look into this later tonight when I get home. This is all starting to make sense to me. Its been a learning curve since instead of building a DSM like most guys do I just bought one of the most powerful ones that is still street legal built by someone else. So Ive been trying to understand it. I am endebted to you folks who take the time to answer my questions and those of other DSMers.
I appreciate the picture, I know exactly where this is. I'm hoping for a simple fix to this problem!
Sincerely
David