Engine Need tuning help!

9

93LXVERTFL

Member

Jul 31, 2023

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Sep 11, 2023

#1

• Sep 11, 2023

• #1

A couple of months ago I bought a 1993 5.0 LX convertible. There has been a lot done to the car but in my opinion it’s sluggish. I need to figure out how to make it all work together. It has a 65mm throttle body, 77mm mass air meter, the computer has a chip, it has roller rockers, E303 cam, headers, SVO aluminum heads, GT 40 Lightning intake, 3.73 gears, and a Baumann shift kit. I think I got everything. I had a buddy check the timing and he advanced it but thought it could be a tooth off because it didn’t help performance. It runs great and idles smoothly it just lacks power. ANY suggestions are welcome!

 

JD1964

there is enough sticking out to grab on to

15 Year Member

Jun 28, 2013

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Sep 11, 2023

#2

• Sep 11, 2023

• #2

Those specs sound similar to the 93 I sold not long ago. It had 4.11 rear though and even with that it wasnt putting much to the pavement. If your engine is not a stroker than you probably have either 302 or if its punched maybe 306 displacement. Its just not going to be a powerhouse. The AOD probably robs at least 50hp before anything else gets the the rear tires.

Mine felt really nice in moderate driving conditions. It made you think like, if it feels this good at 1/2 throttle then it should really take off if you floor it. But, it just didnt.

With your setup and the AOD trans I doubt you will ever even hit 250hp at the rear wheels. You just cant expect too much from it in my opinion, at least in raw acceleration that is.

 

Reactions: 93LXVERTFL

JD1964

there is enough sticking out to grab on to

15 Year Member

Jun 28, 2013

3,427

1,518

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Maryland

Sep 11, 2023

#3

• Sep 11, 2023

• #3

By the way, the Ford EEC IV engine management in that 93 can easily handle those mods without any custom tuning.

 

AeroCoupe

lube between the nut and the face. I know my lubes

Founding Member

Oct 28, 2001

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Claremore, OK

Sep 12, 2023

#4

• Sep 12, 2023

• #4

With a chip most tuners want the base timing at 10 degrees so advancing it will actually hurt performance.

Have you tried to pull codes? What injectors are in it? What size exhaust? Have you verified the rear gear ratio?

 

Kid wita 5oh

I'm definitely not in the original hole

Founding Member

Nov 5, 2000

1,406

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93

Saugus, MA

Sep 13, 2023

#5

• Sep 13, 2023

• #5

JD1964 said:

By the way, the Ford EEC IV engine management in that 93 can easily handle those mods without any custom tuning.

Click to expand...

This!

Disconnect the battery and pull the chip, do a base idle reset and go from there

 

Reactions: JD1964 and General karthief

9

93LXVERTFL

Member

Jul 31, 2023

14

4

13

Sep 15, 2023

#6

• Sep 15, 2023

• #6

AeroCoupe said:

With a chip most tuners want the base timing at 10 degrees so advancing it will actually hurt performance.

Have you tried to pull codes? What injectors are in it? What size exhaust? Have you verified the rear gear ratio?

Click to expand...

 

9

93LXVERTFL

Member

Jul 31, 2023

14

4

13

Sep 15, 2023

#7

• Sep 15, 2023

• #7

No CEL but I can check for old codes. Rear gear has been verified. It has long tube headers and a full Borla exhaust. 19 lb injectors which I think is factory size?

 

AeroCoupe

lube between the nut and the face. I know my lubes

Founding Member

Oct 28, 2001

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Sep 15, 2023

#8

• Sep 15, 2023

• #8

19 lb are stock.

 

M

Monkeybutt2000

Mustang Master

Aug 11, 2019

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Lafayette,IN

Sep 16, 2023

#9

• Sep 16, 2023

• #9

That cam is killing it for you IMO, not a good choice with an AOD.