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

Slight stutter at launch

Thread Tools
 
Search this Thread
 
Old 05-29-2009, 09:25 PM
  #1  
08nastygt
1st Gear Member
Thread Starter
 
08nastygt's Avatar
 
Join Date: Aug 2008
Posts: 102
Default Slight stutter at launch

I recently got a CAI and tune from Brenspeed and took it to the track. I noticed when I launched it seemed like the car would go fall on its face for a minute and then take off again. Almost like a quick stutter. It never did that before the tune it was always smooth. I launced the same from when I didn't have it and when I did have it. I was wonderin if anyone else has experienced anything like this. I'm sure it hurt my times as I had the same 60' before the tune and was runnin the same exact times with my CAI and tuner.
08nastygt is offline  
Old 05-30-2009, 07:23 AM
  #2  
Simon1
5th Gear Member
 
Simon1's Avatar
 
Join Date: Dec 2006
Location: Redding, CA
Posts: 4,552
Default

You should send an email to Brenspeed.

What is your 60's. Is it bogging? or just a hesitation?
Simon1 is offline  
Old 05-30-2009, 09:30 AM
  #3  
08nastygt
1st Gear Member
Thread Starter
 
08nastygt's Avatar
 
Join Date: Aug 2008
Posts: 102
Default

My 60 is 2.28 and 2.32. Its not really a bog just a slight hesitation. Because it still goes but not hard almost like a dead spot. Maybe its a dead spot in the tune. It happens around like 2,500 or so RPMS because I launch at like 2,250. So it goes and then kinda waits and then it hits hard again all at once.
08nastygt is offline  
Old 05-30-2009, 01:25 PM
  #4  
ski
4th Gear Member
 
ski's Avatar
 
Join Date: Mar 2006
Location:
Posts: 1,470
Default

One quick & dirty fix => Launch at an rpm higher than where the hesitation occurs.

Also:
If the ambient temperature was higher when you raced with the CAI & tune, then that will lower your engine's power output.
Allowing your engine to cool off for at least 30 minutes after arriving at the track should help increase its power output.
Reinstalling the tune while the engine is cooling off may help to increase your engine's performance.(This assumes that you drove the car conservatively prior to arriving at the track.)
ski is offline  
Old 06-04-2009, 04:02 PM
  #5  
BRENSPEED
Former Sponsor
 
BRENSPEED's Avatar
 
Join Date: Apr 2005
Location: IN
Posts: 495
Default

Call us if you can't get it figured out.

574.594.9559
BRENSPEED is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
AmericanMuscle4.6GT
2005-2014 Mustangs
7
11-10-2015 02:06 PM
Dokilar
4.6L (1996-2004 Modular) Mustang
15
10-16-2015 08:13 PM
TCStangerv6
Street/Strip
12
10-11-2015 05:57 PM
UrS4
S197 Handling Section
10
10-03-2015 06:23 AM
stangin1996gt
4.6L (1996-2004 Modular) Mustang
0
09-21-2015 11:01 AM



Quick Reply: Slight stutter at launch



All times are GMT -5. The time now is 08:17 PM.