1988 5.0

FastBack71 · January 13th, 2007, 09:44 AM

Now i Recieved a stock 1988 mustang gt. It is in really good condition 70k miles yadayadayada. If i put a long tube uncatted h pipe and flowmasters exhaust system, with a cold air intake and pullies i would i re tune the engine?

FastBack71 · January 13th, 2007, 12:59 PM

i mean how do i retune it? do i need to?

stang94 · January 13th, 2007, 01:25 PM

No you dont need to tune it.

FastBack71 · January 13th, 2007, 04:52 PM

so after like head work and intake manifolds and everything it just accepts the increase of flow? how does that work?

FastBack71 · January 13th, 2007, 09:12 PM

then why do they say mass air is better whats better about it

bigdog89129 · January 13th, 2007, 11:19 PM

Just make sure your new headers have a provision for your o2 sensor. this system tunes itself, the computer reads the air/fuel ratio thru the o2 sensor changing the ratio if needed thru the injectors and the amount of air flowing thru the mass air meter located in the intake tube near your air filter. as you open the throttle the computer also reads the throttle position via the throttle position sensor located on the throttle body then advances timing and fuel as needed.
If you go with better heads you should get bigger mass air and injectors to keep up with the higher airflow/fuel needs
Speed density systems don't have the mass air meter. Have Fun.

lineumup88 · January 14th, 2007, 11:53 AM

Originally Posted by bigdog89129

Just make sure your new headers have a provision for your o2 sensor. this system tunes itself, the computer reads the air/fuel ratio thru the o2 sensor changing the ratio if needed thru the injectors and the amount of air flowing thru the mass air meter located in the intake tube near your air filter. as you open the throttle the computer also reads the throttle position via the throttle position sensor located on the throttle body then advances timing and fuel as needed.
If you go with better heads you should get bigger mass air and injectors to keep up with the higher airflow/fuel needs
Speed density systems don't have the mass air meter. Have Fun.

i agree. it is a leaning computer. you mass air adjusts you injector duty along with tour tps and o2s. as far as the injector and mass air swap, im running a 306 w/stock mass air and 19# injectors and a anderson pms and the injector duty cycle at wide open throttle is only 35% so you don't always have to upgrade with heads cam and intake

93Notchback · January 17th, 2007, 09:08 PM

One thing you want to consider when increasing air intake and exhaust output is your engines timing. You might want to increase your timing to about 16 degress in cool weather and about 12 degrees in warmer weather.

FastBack71 · January 17th, 2007, 09:16 PM

why cant i just do a 15 second timing advance for year round? will that increase horsepower/torque

Tony_90fox · January 17th, 2007, 10:01 PM

13-14 year round for me. 93 octane.

cybersynaptics · January 18th, 2007, 05:38 PM

If it's a stock 88, what mass air?
Should be speed density.

January 13th, 2007, 09:44 AM	#1
FastBack71 Enthusiast Join Date: Dec 2006 Posts: 589	1988 5.0 Now i Recieved a stock 1988 mustang gt. It is in really good condition 70k miles yadayadayada. If i put a long tube uncatted h pipe and flowmasters exhaust system, with a cold air intake and pullies i would i re tune the engine?

January 13th, 2007, 12:59 PM	#2
FastBack71 Enthusiast Join Date: Dec 2006 Posts: 589	i mean how do i retune it? do i need to? __________________ My friends used to wonder Why i joined the air force. Now they wonder why they didn't.

January 13th, 2007, 01:25 PM	#3
stang94 Hardcore Enthusiast Join Date: Oct 2006 Location: Jamaica, NY Posts: 1,017	No you dont need to tune it. __________________ FREE & FOR SALE 198x 351W Block - 90,xxx Miles (FREE) 94-98 GT Hood, 2 pr tail light - 1 Pr power mirror - FREE NEW - ENERGY SUSP Motor Mount POLY, RED ($100) NEW - Reserve Glow Blue/Green ($50)

January 13th, 2007, 04:52 PM	#4
FastBack71 Enthusiast Join Date: Dec 2006 Posts: 589	so after like head work and intake manifolds and everything it just accepts the increase of flow? how does that work? __________________ My friends used to wonder Why i joined the air force. Now they wonder why they didn't.

January 13th, 2007, 09:12 PM	#5
FastBack71 Enthusiast Join Date: Dec 2006 Posts: 589	then why do they say mass air is better whats better about it __________________ My friends used to wonder Why i joined the air force. Now they wonder why they didn't.

January 13th, 2007, 11:19 PM	#6
bigdog89129 Newbie Join Date: Jan 2007 Location: Las Vegas Posts: 7	Just make sure your new headers have a provision for your o2 sensor. this system tunes itself, the computer reads the air/fuel ratio thru the o2 sensor changing the ratio if needed thru the injectors and the amount of air flowing thru the mass air meter located in the intake tube near your air filter. as you open the throttle the computer also reads the throttle position via the throttle position sensor located on the throttle body then advances timing and fuel as needed. If you go with better heads you should get bigger mass air and injectors to keep up with the higher airflow/fuel needs Speed density systems don't have the mass air meter. Have Fun.

January 17th, 2007, 09:08 PM	#8
93Notchback Newbie Join Date: Jan 2007 Location: Houston, Tx Posts: 5	One thing you want to consider when increasing air intake and exhaust output is your engines timing. You might want to increase your timing to about 16 degress in cool weather and about 12 degrees in warmer weather.

January 17th, 2007, 09:16 PM	#9
FastBack71 Enthusiast Join Date: Dec 2006 Posts: 589	why cant i just do a 15 second timing advance for year round? will that increase horsepower/torque __________________ My friends used to wonder Why i joined the air force. Now they wonder why they didn't.

January 17th, 2007, 10:01 PM	#10
Tony_90fox MM Fanatic Join Date: Jun 2006 Location: Bowling Green, KY Posts: 3,604	13-14 year round for me. 93 octane. __________________ 393 dropping in a foxbody near you, very very soon Military Crew E-3 Combat Engineer

January 18th, 2007, 05:38 PM	#11
cybersynaptics Look Ma! My First Post! Join Date: Sep 2006 Posts: 1	If it's a stock 88, what mass air? Should be speed density.

Threads Similar to: 1988 5.0
Thread	Thread Starter	Forum	Replies	Last Post
1988 Mustang GT	NYHigH	Want to Buy	0	November 3rd, 2007 10:09 PM
t-5 swap 1988 gt	stang5.0	Drivetrain	3	April 13th, 2007 05:41 PM
1988 mustang gvw	dr.gonzo	5.0 Mustangs	10	February 21st, 2007 11:19 AM
Just bought 1988 GT	irishjay1983	5.0 Mustangs	1	September 8th, 2006 03:26 PM
1988 GT with T-tops	loudenough	Vehicles	0	July 27th, 2006 09:56 PM

All times are GMT -4. The time now is 01:01 AM.
Contact Us - Modded Mustangs - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2008, Jelsoft Ent. Ltd. & SEO by vBSEO 3.1.0 ©2007, Crawlability, Inc.