Need a little help
Thread Starter
Drifting
Joined: Mar 2005
Posts: 1,832
Likes: 0
St. Jude Donor '09
Need a little help
I have a friend who is in New Orleans, and he just installed my A&A D1SC. Here is the complete list:
A&A 6 Rib D1SC w.4.10 pulley
ECS Dual Nozzle MEth Kit
Kenne Bell Boosta pump
Thunder Racing Harness
Wideband o2
HPTuner Pro
LGM Longtubes w/high flo cats
B&B Bullets
2 bar sensor..setup for Speed density tune
317 Heads (just got them so, I'll put them on later...when I blow it up!
)
50# injectors
Our issue is this, my bud is tech nut, and has it tuned pretty close.
Going through the gears easliy it appears to buck a little
but from a roll on and nailing it, it run ok.
He has leaned it out just pass it backfiring (his words)
We have not put in on the dyno yet, but will real soon when I get a chance to get down to Louisiana.
Anyone here have close to what I have tuned in, 2 bar Speed Density?.
A fellow CF forum member sent me his tune "eb02z06", and I'm grateful and thank him for trying to help me however his tune uses the MAF. I may have to that route
Any help will be apprieciated.
I just need to get my butt down there I guess
A&A 6 Rib D1SC w.4.10 pulley
ECS Dual Nozzle MEth Kit
Kenne Bell Boosta pump
Thunder Racing Harness
Wideband o2
HPTuner Pro
LGM Longtubes w/high flo cats
B&B Bullets
2 bar sensor..setup for Speed density tune
317 Heads (just got them so, I'll put them on later...when I blow it up!
)50# injectors
Our issue is this, my bud is tech nut, and has it tuned pretty close.
Going through the gears easliy it appears to buck a little
but from a roll on and nailing it, it run ok.
He has leaned it out just pass it backfiring (his words)
We have not put in on the dyno yet, but will real soon when I get a chance to get down to Louisiana.
Anyone here have close to what I have tuned in, 2 bar Speed Density?.
A fellow CF forum member sent me his tune "eb02z06", and I'm grateful and thank him for trying to help me however his tune uses the MAF. I may have to that route
Any help will be apprieciated.
I just need to get my butt down there I guess
Last edited by johncbourg; Dec 24, 2006 at 08:03 PM.
Burning Brakes
Joined: Jul 2004
Posts: 759
Likes: 12
From: Tampa Fl
First thing is put good gas 110+ in the tank and switch the alky off.
Now get the tuneup figured out... once done, switch the alky on.. and start getting your air fuel numbers where they need to be.
Hard to figure a car out when tooooo many things done at once.
HTH
Now get the tuneup figured out... once done, switch the alky on.. and start getting your air fuel numbers where they need to be.
Hard to figure a car out when tooooo many things done at once.
HTH
Supporting Vendor
Joined: Jul 2003
Posts: 6,486
Likes: 2
From: http://www.mphparts.com 800-364-1975
You really need to get the car on a dyno so you know what's going on with air/fuel, timing, and knock. I know your mod list says you have a wideband, but from the sounds of how your buddy tuned it (based on whether or not it was backfiring?) you may not know exactly where the air/fuel is.
You mention your issue though is mostly in part throttle. Since you haven't touched your heads or cam yet you shouldn't have real big volumetric efficiency changes vs. stock. I wonder if your injector flow rate numbers are off? If you get those wrong, everything about fueling in your tune will be off, and you'll have to compensate through the VE or MAF tables.
This is of course assuming that everything was installed properly and that the alky kit isn't spraying when it shouldn't, etc.
Good luck.
You mention your issue though is mostly in part throttle. Since you haven't touched your heads or cam yet you shouldn't have real big volumetric efficiency changes vs. stock. I wonder if your injector flow rate numbers are off? If you get those wrong, everything about fueling in your tune will be off, and you'll have to compensate through the VE or MAF tables.
This is of course assuming that everything was installed properly and that the alky kit isn't spraying when it shouldn't, etc.Good luck.
Safety Car
Joined: May 2002
Posts: 3,615
Likes: 2
From: waterloo ontario
St. Jude Donor '08
If you went the 2 bar route your gonna have to do alot of driving in various conditions getting the VE correct-once the VE is pretty accurate then the problems will go away. Just log and see what happens to fuel and spark when the car hesitates and see at what map value it does this. You might want to PM BlownZ06-he has some good experience at this.
Drifting
Joined: Mar 2005
Posts: 1,737
Likes: 0
From: Northern VA
Make sure he got the IFR table correct. I had to reduce the default & min injector pulse values to get rid of low RPM buck with Mototron 60# injectors.
If you enable the MAF and the bucking goes away, then it's likely the VE table needs work. Being that the motor is pretty much stock this should not be the problem.
I also agree with turning off the meth till you get it dialed in.
If you enable the MAF and the bucking goes away, then it's likely the VE table needs work. Being that the motor is pretty much stock this should not be the problem.
I also agree with turning off the meth till you get it dialed in.
