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Old 02-19-2006, 09:22 PM   #1 (permalink)
chriswhtmr
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Angry Problems With Speed Density Help

I Have A 87 Gt Speed Density, With The Following Mods
E303 Cam
Typhoon Efi Intake
70 Mm T. Body & Egr
24lb Injectors
Underdrive Pullies
Ported Stock Heads
Short Block Is 30 Over Also
The Car Ran Like A Rapped Ape, But Black Smoked Crazy, Fouled All The PLugs Then Died. Removed The Injectors, Installed The 19lbers And Then The Dang Thing Idles At 2000rpm, And Strugles Underload, Throttle Is Really Delayed, You Hear The Throttle Body Suck Before The Engine Revs. This Want The Problem When The Bigger Injectors Were In. It Had Very Quick Throttle Response, Reved Really Good ????? I Need Help So Through Something At Me ,,, Mayby Need To Switch To Mass Air???
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Old 02-27-2006, 10:44 PM   #2 (permalink)
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Default Re: Problems With Speed Density Help

YES!!!!! almost everything you listed will put a speed density over the edge...........convert ASAP...ps i have a converted 87
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Old 02-27-2006, 11:15 PM   #3 (permalink)
chriswhtmr
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Default Re: Problems With Speed Density Help

Thanks For The Advice, Im Getting The Mass Air Kit This Weekend. Thanks Again
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Old 03-17-2006, 07:38 PM   #4 (permalink)
mooveefreek
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Default Re: Problems With Speed Density Help

Maybe you, chriswhtmr, need to pay back the money you scammed off us from these auctions on e-bay.
8388348676
6609345965
8391584341
8391585801
6612715896
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Old 03-21-2006, 03:40 PM   #5 (permalink)
mooveefreek
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Default Re: Problems With Speed Density Help

Chris, cum out and slither away frum dat rok yoo be hidin' under and de-FEND yoself yoo widdle queef!!! Is yoo willing to embarask yoself in front of yo kind just like da minus vaginus yoo is? I taut mus-STANG peepuls wuz TUFF!!! (i'm a 'vette man myself, sorry guys)
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Old 10-02-2010, 11:04 PM   #6 (permalink)
walmic679
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Exclamation Re: Problems With Speed Density Help

[QUOTE=chriswhtmr;321505]I Have A 87 Gt Speed Density, With The Following Mods
E303 Cam
Typhoon Efi Intake
70 Mm T. Body & Egr
24lb Injectors
Underdrive Pullies
Ported Stock Heads
Short Block Is 30 Over Also
The Car Ran Like A Rapped Ape, But Black Smoked Crazy, Fouled All The PLugs Then Died. Removed The Injectors, Installed The 19lbers And Then The Dang Thing Idles At 2000rpm, And Strugles Underload, Throttle Is Really Delayed, You Hear The Throttle Body Suck Before The Engine Revs. This Want The Problem When The Bigger Injectors Were In. It Had Very Quick Throttle Response, Reved Really Good ????? I Need Help So Through Something At Me ,,, Mayby Need To Switch To Mass Air???[/QUOTE

I know exactly what your problem is. You cannot run all those mods with speed density. The biggest problem is your e-cam. That cam HAS to be ran off of mass air flow. When you have an ecm that is set up for speed density, you CAN NOT change anything what so ever. The speed density ecm is set up for only one combonation, and that is factory pre-set tuning. I stuck just the e-cam in mine, and it surged at idle, had a "puk" spot in the throttle, and eventually, it foulded up my plugs, both O2's, and my egr. After i installed a mass air flow conversion kit, had no problems after that.
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Old 11-27-2010, 06:34 AM   #7 (permalink)
88workcar
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Default Re: Problems With Speed Density Help

I know exactly what your problem is. You cannot run all those mods with speed density. The biggest problem is your e-cam. That cam HAS to be ran off of mass air flow. When you have an ecm that is set up for speed density, you CAN NOT change anything what so ever. The speed density ecm is set up for only one combonation, and that is factory pre-set tuning. I stuck just the e-cam in mine, and it surged at idle, had a "puk" spot in the throttle, and eventually, it foulded up my plugs, both O2's, and my egr. After i installed a mass air flow conversion kit, had no problems after that.[/QUOTE]

Just because you can not make it work means nothing. I ran SD set up for many years. E cam, B cam, wolverine 1087 cam, big heads, big valves, big pipes,NOS, even a supercharger, all with speed density. No special tricks.
Walmis, ditch the 70mm you do not need it, and change your TPS and set it .
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