91 Coupe 5.0 Kenne Bell and Moates QH issues

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91 Coupe 5.0 Kenne Bell and Moates QH issues

Unread postby Kbnotch91 » Mon Jan 15, 2018 12:42 pm

Hello all, I’m new here. I’m having issues with my coupe. I’ll start from the top.

My car was stock except exhaust. I installed a KB 1.5 on an FMU.

Decided to do thing the “right” way and go with a tune and supporting fuel mods.

I purchased and installed the following.

New 70MM throttle body
New walboro 255 lph fuel pump
New C&L Maf housing and Throttle body Elbow
Used green top 42lb injector
Used MSD 6Al
Used Moates qh chip

I purchased a base tune from poweraddersolution

After installing everything I started the car and it immediately had an idle surge issue. At operating temps the AF was at 10.0 reading on an AEM wideband. I removed the chip and started the car. Surging idle was still present but the A/F was about 14.5.

With the chip installed giving it throttle the a/f leans out.

Maf reading was at about 35
Lambse1 and 2 12.076

Rough reading but where they stayed around.

Pulled the plugs and they are all black.

Somebody please help.

C&l was verified to be for 42 lb injector. Going to be checking fuel pressure soon although I doubt it’s an issue. Checking boxes at this point. I can email the data log and tune to anyone who wants to check it out. Thank you
Kbnotch91
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Vehicle Information: 91 Mustang coupe
Kenne Bell 1.5

Re: 91 Coupe 5.0 Kenne Bell and Moates QH issues

Unread postby decipha » Mon Jan 15, 2018 1:04 pm

thats common on a supercharged setup, make sure it doesn't have any air leaks and that the inlet pipe from the maf sensor to the throttle body is sealed with no air being vented or leaking

if all checks out then you'll most likely need to revise the tune with some fuel taken out down low
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decipha
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Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
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03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: 91 Coupe 5.0 Kenne Bell and Moates QH issues

Unread postby Kbnotch91 » Mon Jan 15, 2018 1:13 pm

I checked everything and didn’t notice any leaks. I’ll mix some soapy water and verify everything.
Kbnotch91
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Posts: 5
Joined: Mon Jan 15, 2018 12:31 pm
Name: Joe
Vehicle Information: 91 Mustang coupe
Kenne Bell 1.5

Re: 91 Coupe 5.0 Kenne Bell and Moates QH issues

Unread postby Kbnotch91 » Wed Jan 17, 2018 9:24 am

40% fuel was taking out universal. Car is running better and holding idle. Maf checked out fine. Something else must be up. Checked for vacuum leaks, nothing found. Will be replacing upper intake gasket this week. Any other suggestions?
Kbnotch91
General Poster
 
Posts: 5
Joined: Mon Jan 15, 2018 12:31 pm
Name: Joe
Vehicle Information: 91 Mustang coupe
Kenne Bell 1.5

Re: 91 Coupe 5.0 Kenne Bell and Moates QH issues

Unread postby decipha » Wed Jan 17, 2018 3:27 pm

why are u replacing the gasket if its not leaking?
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decipha
Tooner
 
Posts: 15322
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: 91 Coupe 5.0 Kenne Bell and Moates QH issues

Unread postby Kbnotch91 » Wed Jan 17, 2018 3:45 pm

Difficult to verify for sure if the s/c gasket is leaking or not.
Kbnotch91
General Poster
 
Posts: 5
Joined: Mon Jan 15, 2018 12:31 pm
Name: Joe
Vehicle Information: 91 Mustang coupe
Kenne Bell 1.5

Re: 91 Coupe 5.0 Kenne Bell and Moates QH issues

Unread postby decipha » Wed Jan 17, 2018 6:09 pm

its no different than checking without, simple smoke the inlet and see if it leaks
User avatar
decipha
Tooner
 
Posts: 15322
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: 91 Coupe 5.0 Kenne Bell and Moates QH issues

Unread postby Kbnotch91 » Wed Jan 17, 2018 7:03 pm

yea, I don't have one of those.
Kbnotch91
General Poster
 
Posts: 5
Joined: Mon Jan 15, 2018 12:31 pm
Name: Joe
Vehicle Information: 91 Mustang coupe
Kenne Bell 1.5

Re: 91 Coupe 5.0 Kenne Bell and Moates QH issues

Unread postby decipha » Thu Jan 18, 2018 3:37 am

can't check for leaks without one
User avatar
decipha
Tooner
 
Posts: 15322
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce


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