Try the Quarterhorse or stick with WMS SDS

Vehicle specific forum for tuning the Foxbody Chassis Mustangs utilizing the LUX0, GUFA, GUFB, and GUF1 Strategy

Try the Quarterhorse or stick with WMS SDS

Unread postby 89fast5oh » Thu Apr 26, 2018 5:13 pm

When I built my 408W last year I had no plans of swapping ECMs, I even had Ed Curtis grind a EFI friendly cam with a 114* lobe separation.

Then I came across a smoking deal on a Western Motorsports SDS speed density system. I installed it last fall and tried it out. I have gotten the car to run and drive very well but am fighting a terrible cold/first start condition.

No matter what I do I cannot get a nice startup from cold. It acts worse than a carbureted car. It has turned me off on using the system.

So now I figured that since I drove around a 435hp 351W with stock not tuned EEC-IV for 14 years, yes 14 years, that I would take the WMS SDS out and put the EEC-IV back in.

I have a Quarterhorse, chip, and burn2. I have read dozens of pages of info here on this forum and have even written a tune for my car based on Decipha's A9L2.

If I can't get the WMS SDS running well, am I dreaming thinking I can put the stock computer back in with the A9L2 and use the Quarterhorse to make adjustments?
89fast5oh
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Posts: 56
Joined: Sat Mar 31, 2018 9:51 pm
Name: Kevin
Vehicle Information: 1989 LX. 408W 10.7:1, FTI hyd roller .622"/.608" int/exh, AFR 185s, Edelbrock Victor EFI 5.8, 47lb injectors, 75mm MAF & throttle body, 1 3/4" long tubes, 2.5" full exhaust, TKO600, 4.10s.

Re: Try the Quarterhorse or stick with WMS SDS

Unread postby decipha » Fri Apr 27, 2018 12:16 pm

the a9l2 is mass air, sounds like you had a speed density setup

if your swapping ecus its dumb to go to the ancient and old fox era ecus much better off going to the 94-95 mustang 5.0 cbaza ecu as it has far greater control especially idle

if you have the speed density ecu just slap that back in, i wrote some idle code for the SD ecu's to tame the idle, it wont be perfect but significantly better than what the speed density ecu allows
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Re: Try the Quarterhorse or stick with WMS SDS

Unread postby 89fast5oh » Fri Apr 27, 2018 1:09 pm

decipha wrote:the a9l2 is mass air, sounds like you had a speed density setup

if your swapping ecus its dumb to go to the ancient and old fox era ecus much better off going to the 94-95 mustang 5.0 cbaza ecu as it has far greater control especially idle

if you have the speed density ecu just slap that back in, i wrote some idle code for the SD ecu's to tame the idle, it wont be perfect but significantly better than what the speed density ecu allows


I should have explained better. Car was a 1989 Mustang 5.0 with mass air. I got a good deal on the WMS SDS so I thought I would try that. I am not liking it so I will swap back to the Ford EEC-IV A9L mass air.
89fast5oh
General Poster
 
Posts: 56
Joined: Sat Mar 31, 2018 9:51 pm
Name: Kevin
Vehicle Information: 1989 LX. 408W 10.7:1, FTI hyd roller .622"/.608" int/exh, AFR 185s, Edelbrock Victor EFI 5.8, 47lb injectors, 75mm MAF & throttle body, 1 3/4" long tubes, 2.5" full exhaust, TKO600, 4.10s.

Re: Try the Quarterhorse or stick with WMS SDS

Unread postby 89fast5oh » Fri Apr 27, 2018 1:18 pm

I guess thread doesn't matter really anymore because I started to swap back to the stock computer this morning.
89fast5oh
General Poster
 
Posts: 56
Joined: Sat Mar 31, 2018 9:51 pm
Name: Kevin
Vehicle Information: 1989 LX. 408W 10.7:1, FTI hyd roller .622"/.608" int/exh, AFR 185s, Edelbrock Victor EFI 5.8, 47lb injectors, 75mm MAF & throttle body, 1 3/4" long tubes, 2.5" full exhaust, TKO600, 4.10s.

Re: Try the Quarterhorse or stick with WMS SDS

Unread postby decipha » Fri Apr 27, 2018 1:33 pm

why would you swap from the mass air ecu to an older speed density setup?
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decipha
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Posts: 15691
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: Try the Quarterhorse or stick with WMS SDS

Unread postby 89fast5oh » Fri Apr 27, 2018 2:12 pm

decipha wrote:why would you swap from the mass air ecu to an older speed density setup?


I swapped because at the time I didn't know about the moates quarterhorse and there was no one within a few hundred miles that would even look at it.
89fast5oh
General Poster
 
Posts: 56
Joined: Sat Mar 31, 2018 9:51 pm
Name: Kevin
Vehicle Information: 1989 LX. 408W 10.7:1, FTI hyd roller .622"/.608" int/exh, AFR 185s, Edelbrock Victor EFI 5.8, 47lb injectors, 75mm MAF & throttle body, 1 3/4" long tubes, 2.5" full exhaust, TKO600, 4.10s.


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