When is a tune required? - MustangForums.com

4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

When is a tune required?

Reply

 
 
 
Old 01-01-2007, 07:21 PM
  #1  
Zanador
2nd Gear Member
Thread Starter
 
Join Date: Nov 2006
Location: Bergen County, New Jersey
Posts: 477
Default When is a tune required?

I am putting together a list of mods I am planning to do to my96 GTover the next few months, and the costs. I am going to do a PI cam/Intake swap, and full bolt ons (Minus Underdrive Pulleys). What I want to know, is would my car require a tune to drive safetly? I will be getting a tune eventuallyfor it for sure to bring out all of its power, but will it be running dangerously lean from these mods, and require one right away as apposed to being able to drive it for a bit and save up extra cash? Need to know how much I need to save before I can start doing some of the mods.
Zanador is offline  
Reply With Quote
Old 01-01-2007, 08:09 PM
  #2  
4.698GT
4th Gear Member
 
Join Date: Jan 2005
Location: Port Monmouth, New Jersey
Posts: 1,984
Default RE: When is a tune required?

Mainly when you use start to use some sort of power adder. Nitrous, a supercharger or a turbo installation would all require some sort of tune to be safe. After the PI swap, the compression will be bumped and the tune is only going to help on that.
4.698GT is offline  
Reply With Quote
Old 01-01-2007, 08:28 PM
  #3  
xxkazp3rxx
6th Gear Member
 
Join Date: Dec 2005
Location: Florida
Posts: 5,893
Default RE: When is a tune required?

Once you do the swap is when i'd do it... the cams will throw off the A/F. There was someone else that just did the swap with cams and was pulling a 17.5 A/F which is much to lean. After you do the swap, get a baseline dyno, and if your a/f is lean then you will need a tune - that's the best way to see if you need one.
xxkazp3rxx is offline  
Reply With Quote
Old 01-01-2007, 09:57 PM
  #4  
Zanador
2nd Gear Member
Thread Starter
 
Join Date: Nov 2006
Location: Bergen County, New Jersey
Posts: 477
Default RE: When is a tune required?

Hrm, 17.5 is really dangerously lean... would the car be able to be driven at all do you think? I would really like to be able to drive the car to the shop where I get it dyno'd and tuned... do you think I would be alright if I did'nt get on it and shifted it early?
Zanador is offline  
Reply With Quote
Old 01-01-2007, 10:20 PM
  #5  
SOHCtimes2
5th Gear Member
 
Join Date: Jan 2006
Location: Orange County, California
Posts: 2,375
Default RE: When is a tune required?

You can put it over to get it tuned, yes. Cars run fairly lean during cruising habbits actually anyway. Just don't get on it
SOHCtimes2 is offline  
Reply With Quote
Old 01-01-2007, 10:43 PM
  #6  
xxkazp3rxx
6th Gear Member
 
Join Date: Dec 2005
Location: Florida
Posts: 5,893
Default RE: When is a tune required?

+1... once you get it done just get a dyno where the a/f is measured. If it's lean then have them tune it - if it's ok.. then dont worry about it.

I was using his car as an example.. all cars are different.
ORIGINAL: SOHCtimes2

You can put it over to get it tuned, yes. Cars run fairly lean during cruising habbits actually anyway. Just don't get on it
xxkazp3rxx is offline  
Reply With Quote
Old 01-01-2007, 10:52 PM
  #7  
M1ke
4th Gear Member
 
Join Date: Oct 2005
Location:
Posts: 1,555
Default RE: When is a tune required?

make sure you put in 93/91 octane fuel when you do the swap to prevent knocking
M1ke is offline  
Reply With Quote
Old 01-01-2007, 11:31 PM
  #8  
geetee03
5th Gear Member
 
Join Date: Oct 2005
Location:
Posts: 2,023
Default RE: When is a tune required?

cams require a tune. get a tune after your bolt on's are complete.
geetee03 is offline  
Reply With Quote
Old 01-02-2007, 12:27 AM
  #9  
StockD15b
4th Gear Member
 
Join Date: Oct 2005
Location: Fl
Posts: 1,392
Default RE: When is a tune required?

sooo, in a nut shell. anytime where more air is going to be forced into the engine?
StockD15b is offline  
Reply With Quote
Reply
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
uedlose
The Racers Bench
4
10-01-2015 09:31 PM
b8checker
New Member Area
3
09-30-2015 08:11 AM
warwickbass
The New S550 2015-2020 Mustang
6
09-20-2015 05:51 PM

Forum Jump

Thread Tools
Search this Thread
Advertising
Featured Sponsors
Vendor Directory