MustangWorks.com - The Ford Mustang Power Source!

Go Back   MustangWorks.com : Ford Forums > Mustang & Ford Tech > Modular Madness
Register FAQ Members List Calendar Mark Forums Read

Notices


Reply
 
Thread Tools Rate Thread Display Modes
Old 02-09-2007, 11:40 PM   #1
98mustangcobra
Registered Member
 
Join Date: Feb 2007
Posts: 25
Exclamation Re: 1998 Mustang Cobra Engine Work Question?

Hello i am really looking into getting this kit so i really would like to know more about why you say this.

13) Boost Cooler Water Methanol Injection ( Said to give 78HP in 5.0 mustang and super fords magazine)

I warn all my customers away from these. These are a meltdown waiting to happen.
98mustangcobra is offline   Reply With Quote
Old 02-10-2007, 08:36 AM   #2
Jeff Chambers
Moderator
 
Jeff Chambers's Avatar
 
Join Date: Aug 2000
Location: Milan, OH
Posts: 2,699
Default Re: 1998 Mustang Cobra Engine Work Question?

For the water/meth systems to make the advertised power, two things have to happen; (1) the air/fuel mixture has to be leaned and (2) boatloads of timing have to be added.

As soon as the water/meth sprays, the A/F will drop a full point. That means that if you're boosted and your target A/F is 11.5:1, it falls to 10.5:1....way too rich. So the tuner takes fuel out to bring it back to 11.5:1. Secondly, a bunch of timing is added. I've had to add as much as 12-degrees at WOT to get power gains of 60hp on a 400hp blown combination. All this is fine when the spray is there. However, when the spray isn't, you've got conditions that are perfect for a hurt motor. The A/F is now a point or more too lean and the engine has way too much timing. BOOOM! These systems are notorious for the pumps failing and injectors clogging. Not to mention that its very easy to run out of the mixture and not even know it. I've seen too many engines hurt with these systems. I'd rather see a small wet shot sprayed in front of the blower. At least with a 50-75hp shot, there are no significant changes in the tuning. So if the shot fails, everything is the same as without the shot to begin with.
__________________
Jeff Chambers
1990 Mustang GT 10.032 Seconds / 137.5 MPH
14-time Street Warrior World Record Setter
CRT Performance
2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH
2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2

"There's nothing boring about a small block automatic shifting gears at 9400 rpm!"
Jeff Chambers is offline   Reply With Quote
Reply


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
1998 Cobra - Test your mustang knowledge, guess how fast i'll run 1/4 mile 84LX89GT Blue Oval Lounge 20 07-31-2017 04:27 PM
Borla catbacks for a 1998 cobra. 98CobraConv Modular Madness 0 10-01-2001 04:29 PM
Mods for 1998 Cobra 98CobraConv Modular Madness 7 09-23-2001 02:02 PM
1998 Mustang Cobra Tune Up Specification DF Modular Madness 9 02-04-2001 09:36 PM
1998 Cobra rear end dparkinson Modular Madness 6 07-18-2000 10:02 PM


All times are GMT -5. The time now is 04:58 AM.


SEARCH