Notices
4.6L V8 Technical Discussions Any questions about engine, transmission, or gearing can be asked here!

Hot rod cams, bama custom tune... Backfire thru intake

Thread Tools
 
Search this Thread
 
Old 02-23-2012, 01:35 AM
  #21  
Diabolical!
5th Gear Member
 
Diabolical!'s Avatar
 
Join Date: Jul 2006
Location: New Orleans
Posts: 4,491
Default

I'd skip brenspeed and go straight to a good dyno tuner. Nothing against Brent, but you want a hands on tuner for this. I still suspect that it's out of time. Dealers rarely admit fault.
Diabolical! is offline  
Old 02-23-2012, 07:06 AM
  #22  
moosestang
6th Gear Member
 
moosestang's Avatar
 
Join Date: Sep 2006
Location: Gainesville, FL
Posts: 11,278
Default

Originally Posted by DGunter
Those numbers are from long term fuel trim.

I have read a million good things about bama, and since that's my only mod worth mentioning I didn't want to spend the extra money on a dyno tune. But I could have bought a dyno tune, CAI,and a good start on lt's with the off road x
I'm used to seeing long term fuel trims as a percentage. Mine are not always the same bank to bank.
moosestang is offline  
Old 02-23-2012, 07:12 AM
  #23  
moosestang
6th Gear Member
 
moosestang's Avatar
 
Join Date: Sep 2006
Location: Gainesville, FL
Posts: 11,278
Default

Originally Posted by Diabolical!
I'd skip brenspeed and go straight to a good dyno tuner. Nothing against Brent, but you want a hands on tuner for this. I still suspect that it's out of time. Dealers rarely admit fault.
They may not like to admit fault, but surely they can easily tell if the timing is off. Isn't it as simple as removing the front cover and looking at the timing marks?
moosestang is offline  
Old 02-23-2012, 08:20 AM
  #24  
DGunter
Thread Starter
 
DGunter's Avatar
 
Join Date: Feb 2011
Location: Tennessee
Posts: 17
Default

I took it to the dealer he removed the front cover and said it was perfect. He told me to come look at it but I just don't have time, he said he was going to take some pictures of the timing with his Iphone and send them to me he is going to put the car back together today. He also thinks it is in the tune since the car runs fine on the stock tune. Oh and as simple as removing the front cover is apparently a 8-10 hour job. That is what i'm charged for anyway. So the timing is perfect the teeth are all in the correct place and I'm back to square 1 just cost me a few hundred to confirm it for bama so we could for a fact eliminate that as a problem.

Also those readings are from the last data-log performed

Last edited by DGunter; 02-23-2012 at 08:22 AM.
DGunter is offline  
Old 02-23-2012, 07:20 PM
  #25  
moosestang
6th Gear Member
 
moosestang's Avatar
 
Join Date: Sep 2006
Location: Gainesville, FL
Posts: 11,278
Default

It's simple, not quick. You have to remove the valve covers, radiator hose and all the pulleys just to start.
moosestang is offline  
Old 02-23-2012, 08:18 PM
  #26  
DGunter
Thread Starter
 
DGunter's Avatar
 
Join Date: Feb 2011
Location: Tennessee
Posts: 17
Default

Bama is going to try a couple of more tunes. The tuner said that they had to add fuel to my car which is not common for just cams. He wants me to show him pics of my air box so he can confirm it has not been manipulated. I bought the car new so that's not an issue. He thinks vacuum leak but the tech has double checked everything and says its fine.
DGunter is offline  
Old 02-23-2012, 11:51 PM
  #27  
Derf00
Gentleman's Relish
 
Derf00's Avatar
 
Join Date: Feb 2005
Location: AZ
Posts: 13,090
Default

If AM/Bama can't fix it, take it to a Dyno. Something's not right. Yes, it is normal for fuel trim to be a little different from one bank to the other but there is a limit (within 5% of each other). Yours is within that spec.

I still say the timing or camshaft sensor...
Derf00 is offline  
Old 02-24-2012, 09:12 AM
  #28  
DGunter
Thread Starter
 
DGunter's Avatar
 
Join Date: Feb 2011
Location: Tennessee
Posts: 17
Default

Timing is perfect paid 800 dollars to figure that out also there are no codes, and the stock tune runs perfect if it were a sensor would it change with the tune?
DGunter is offline  
Old 02-27-2012, 11:49 AM
  #29  
05slpGT
3rd Gear Member
 
05slpGT's Avatar
 
Join Date: Mar 2007
Location: Houston, Texas
Posts: 814
Default

My car is also "unique", every time i get a tune from Bama or Brenspeed, my throttle body breaks, or the car just drives terrible, and I dont mean that against either tuner, its just my car. Ever since I went and got a custom dyno tune(about 8 months ago) the car runs awesome. As much as it sucks to spend more money in your situation, I would HIGHLY suggest to go spend 300-500 on a dyno tune from a local reputable shop. Its just not the same when they arent using YOUR car on the dyno.
05slpGT is offline  
Old 02-28-2012, 05:56 AM
  #30  
DGunter
Thread Starter
 
DGunter's Avatar
 
Join Date: Feb 2011
Location: Tennessee
Posts: 17
Default

Thanks, that's definitely what I will do, too bad the closest reputable shop is two hours away.
DGunter is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Ryan Fitzpatrick
New Member Area
3
09-14-2015 02:21 AM
Webster454
2005-2014 Mustangs
1
09-07-2015 04:59 AM
Mustangmalo
General Tech
2
09-06-2015 05:22 PM
raleigh05GTO
New Member Area
5
09-04-2015 07:09 AM



Quick Reply: Hot rod cams, bama custom tune... Backfire thru intake



All times are GMT -5. The time now is 07:25 PM.