Abby launching (with ignition issues)

[qbnkiller]

So I had Abby out this afternoon to try and find the miss she's having. The temps around here are great (~50*) and I burned a few hours at work.

A little background....ran the truck this exact way, only couldn't build boost over 12-13#. Got home, did some digging, and ended up running a MBCV (Turbosmart - way nice). That got me running quite a bit better. Did lots more driveability tuning, then started to turn it up a bit. Once I hit around 16#, it started breaking up under WOT. Did a bunch of looking around, and after these runs, I think I may have the issue narrowed down a bunch. Either way, in this video you can see the following:

1) Launching at anything over 6-7# causes tire spin.

2) This turbo is insane! It is a T-3 .70 A/R 62mm turbo. I haven't even started taxing this unit yet...can't wait until I can keep my foot in it all the way....The spool is absolutely great on the street (TCI billet 3,000-stall converter).

3) Even at these low TPS %, the truck is a monster! I will have to work on getting this power to the ground once the winter is over out here.

http://www.youtube.com/watch?v=eVT96HXalr4

I believe that my problem is in the Accel box. I will be looking into it more over the weekend. Anyone have any thoughts?

Thanks for looking!

-QBNKILLER

 

[R&C_RallySyTy]

Re: Abby launching (with ignition issues)

Nice vid, thanks for sharing.

 

[Jimmy]

Re: Abby launching (with ignition issues)

Sounds to me like it's going lean. You watching the FP gauge?

Oh yeah,cool truck Alex. :tup:

 

[qbnkiller]

Re: Abby launching (with ignition issues)

yeah...she's fat as hell where its breaking up (9.8-10.8).

 

[Sy-1177]

Re: Abby launching (with ignition issues)

Cool video Alex!! Sorry I don't have any input for you but that thing is gonna be killer once you get it dialed in!! :tup:

 

[hatrik8]

Re: Abby launching (with ignition issues)

Your stock boost gauge, temp gauge, and oil pressure gauge don't work. Welcome to the family. :rotf:

What's your peak boost? (edit:nevermind see 16#)

 

[qbnkiller]

Re: Abby launching (with ignition issues)

BS3 is a stand-alone unit...the stock harness isnt in the truck anymore, so no stock gauges.

 

[qbnkiller]

Re: Abby launching (with ignition issues)

its weird because if you look at the graphs, the RPM line (when its running rough) is fuzzy instead of smooth. I think its acting like the spark is blowing out, but I have to go over the Accel box wiring (power and ground) once again to be sure there isn't anything messed up there.

Next is some traction!

 

[jpalmer]

Re: Abby launching (with ignition issues)

i was thinking spark getting blown out. but i dont know crap, lol. nice vids though. good luck man,thanks for the info today btw. :tup:

 

[bezerk]

Re: Abby launching (with ignition issues)

what plugs are you running, have you taken them out to check them?
fast truck you got there man!

 

[jimmyz79]

Re: Abby launching (with ignition issues)

X2

That sure seems like plugs not firing....

 

[qbnkiller]

Re: Abby launching (with ignition issues)

UPDATE:

Went out last night and changed the lugs - even though they have less than 500 miles on them. I will have to post pics tomorrow (left the plugs at home and the camera at work), but suffice it to say - they did not look bad at all. They actually looked perfect! I checked the gaps on all of them and they were within 0.002" of each other.

I was using an Autolite AR12 (-2 heat range from stock - racing plug - non-projected tip) and swapped out to a set of shitty, half-fouled-out NGK UR6IX's at 0.024". Took me a few cranks to get her lit, but the truck fired up. I let her warm up for 10 minutes, and went for a drive.

Once I got about 5-10 miles in, I leaned into it a bit more, watching the laptop as I went. No problems as I rolled into it. I stopped, started a log trace, and built boost to 10#. When I let go, OMFG! That was the problem! The truck torqued hard to the left while trying to catch traction, I lifted a bit, and it hooked and went. Jesus! I ran it up to about 80 and slowed down. I pulled over and checked the logs. Now it seems a little lean through the upper RPM area, but not too bad. I throw more fuel at it up there, pull 1* out, and let her eat again. I can notice that now if I try to get to 7# or more of boost off the line (foot brake w/hydroboost), it pushes through them.

I will try to get some more tweaking done tomorrow and Friday, with a new vid (longer) maybe on Saturday. I will also see if I can wick it up to 24# or so....hehehe!