07 M8 BD RG FAT?????

My sled runs very strong on the top end. No complaints there. The bottom end seems a little rich. Running 38 PSI fuel pressure. The problem occurs when after a short WOT then let go and get right back on it. When I get right back on it, it's like I fouled a plug or something. I have to let the sled get back to idle to clear back up before I can get on it again. This doesn't happen if I've been on the throttle for a while, only after a short burst of WOT. It seems to be happening around the 5000 RPM range. I added fuel to the 5000 range up to 10 across the board and it was considerably worse. Then I went below Boondockers recommended numbers of -2, -4, and -6 to -4, -6, -8 and put the hi at 3000 to -8. This helped considerably but it still does it. The EGTs atthe 5000 range with my numbers are at 1250ish.

Any advice.

FYI - I have the older boondocker box and running ~12 PSI of boost.

Thanks,

Mike

I also have a check engine light flashing. 1 flash followed by 7 flashes.

racegasrider said:

the 7 flashes is probably a 3 then a 4 which is a bad exhaust sensor...just had the same deal happen to mine dont let the cat shop charge you 150 in diagnostics labor the other if its a true 7 flashes is a tps sensor gone bad...my $$ is the exhaust temp sensor $ 127.00 fix id just replace it and im sure your deal is fixed..

Click to expand...

I checked it multiple times over the weekend. It was 1 flash followed by a pause then followed by 7 flashes. A buddies sled had the cheat sheet under the hood it said it was the TPS. I think it might be related to my throttle cable not being adjusted correctly. It's a little tight and I'm not feeling the 'click' like a used to. I need to readjust that and see what happens.