Is this normal???

D

DennisT

New Member

Oct 12, 2004

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0

Sep 18, 2006

#1

• Sep 18, 2006

• #1

Let my brother in law take her for a spin on Saturday and he noticed that the RPM's seem to hang a little in between shift's and he didn't think this was normal. This is my first performance manual so I don't have a clue but he's owned like five 5.0's back in the day and he didn't think his manuals were like that. Are they supposed to drop right down in between shifts or hang a little before they do.....is this normal operation? Other than that the car runs absolutely fine and he was very surpised with the power.

Thanks

 

6

66_stang

Member

Jul 4, 2004

154

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17

Woodlands TX

Sep 18, 2006

#2

• Sep 18, 2006

• #2

Yes, the revs seem to stick longer than the older generation 5.0's. It's just new technology, nothing to worry about.

 

D

DennisT

New Member

Oct 12, 2004

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Sep 18, 2006

#3

• Sep 18, 2006

• #3

Thanks 66....I appreciate it. That's what we were both thinking but wanted to make sure.

 

Marine One

New Member

Jan 28, 2004

276

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North Topsail Beach, NC

Sep 18, 2006

#4

• Sep 18, 2006

• #4

Mine does it too. I noticed it but not until after flashing with the Brenspeed tune, but I hadn't romped on it until after the tune.

 

N

nbk13nw

Member

Mar 31, 2005

186

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19

Newport News, Va

Sep 18, 2006

#5

• Sep 18, 2006

• #5

Yes it is normal for a stock one. You may notice two things... throttle lag and the hanging RPM's when you let off the fast pedal.

Both are a part of the programming for the throttle by wire in the new Mustangs. Both can be tuned out by using either the Predator or the SCT tuners.

 

cowtown

Founding Member

Nov 4, 2001

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Victoria, BC Canada

Sep 18, 2006

#6

• Sep 18, 2006

• #6

It's for the emmisions/fuel system. Basically it ensures that unburnt fuel is used.

 

Mike97gt

it doe snot

Founding Member

Jan 26, 1999

10,633

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89

the people's republic of massachusetts

Sep 18, 2006

#7

• Sep 18, 2006

• #7

cowtown said:

It's for the emmisions/fuel system. Basically it ensures that unburnt fuel is used.

Click to expand...

exactly..


it can be changed in the tune if you really want to get rid of it.

 

REDFIRE 05 GT

New Member

Nov 18, 2004

283

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Junction City KS

Sep 18, 2006

#8

• Sep 18, 2006

• #8

Mine stopped after the preditor tune and the throtle response was much better.

 

Rock36

Member

Jan 1, 2006

76

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6

Modesto, CA/Germany

Sep 19, 2006

#9

• Sep 19, 2006

• #9

svttech76 said:

exactly..


it can be changed in the tune if you really want to get rid of it.

Click to expand...

+1 Alot of things were done to make the new mustang conform to ULEV II standards, and produce on 50% of the emissions of the last generation Mustang, to include those butterfly valves in the intake runners.