Stock pop pressure is 245 bar, which equals 3554 psi. 1 bar = 14.5078 psi. You certainly don't want to go any higher than stock pop pressure in the VE world. Most likely you have too much fuel now making you slower. Or more tire slippage? A dyno run would be interesting to see any change in hp. Have you talked to Scheid about your issues?

 

Launching in four wheel drive assumes me at this point that I'm not slipping the tires. All times are a bit slow from 60' on out (75+ mph @ 8.7x in the 8th. Down from 8.5). Not sure of the quarter with these injectors. Was at 13.54.

Yes, I've talked with the folks from Schied. They figure too much fuel as well.

 

Here's the deal . . .

With the regular DDP4s, tuned pretty good I reckon:

Rockingham International Dragway (1/4), 2009 Mopars @ The ROCK / NADM event (04/11/09).





Dunn-Benson Dragway (1/8), Thursday Night Test-N-Tune (04/30/09).





Replacing the injectors two or three weeks ago and changing absolutely nothing else presents with this as typical (Dunn-Benson).





I've effectively disabled the AFC circuit with no change at the track. Heck, last night I backed-out the main fuel screw to see if that'd help. Nah, less smoke and slower times.


At this point, it's suggested I need more injection timing advance, to the tune of say . . . 16* BTDC (as measured with a timing light).

And a cam wouldn't hurt, . . at all.

Thanks folks.

 

Looking forward to the bc847 cam swap tutorial

 

I'm with you sdubfid, BC847 has great tutorials. He just needs to do a "1st gen for Dummies manual".