Perload exceeded on Shift

Decipha's custom GUFX strategy covers all 89-93 foxbody ecu's including the 88 mass-air california ecus.
Brewster
Posts: 41
Joined: 15 May 2021, 15:59
Location: Edmonton, Alberta, Canada
Vehicle Information: 1992 Mustang LX
347 Cui
AFR 185

Perload exceeded on Shift

Unread post by Brewster »

I was able to go WOT on the dyno and even row through the gears but now on the street wot TPS shift 1-2 and as soon as I shift into 2nd perload exceeds and opens up the injectors and floods the engine to a stall. Where to now, haven't experienced this before.

Wot-3rd-C3W-Final was a WOT pull on the dyno, The Burnout stall was on the street getting into it
Attachments
WOT-3rd-C3W-Final.xdl
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Final-V1.bin
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Burnout-Shift-Stall-2.xdl
(25.98 KiB) Downloaded 13 times
Brewster
Posts: 41
Joined: 15 May 2021, 15:59
Location: Edmonton, Alberta, Canada
Vehicle Information: 1992 Mustang LX
347 Cui
AFR 185

Re: Perload exceeded on Shift

Unread post by Brewster »

Ok I had the top cell of the maf transfer entered in as 5.00 v and iirc eec-iv should have it set at 16.00v. Could this be an issue ?

Also why am I pegging this maf curve so easy, seem to be at the top of the curve already with this thing, Need to scale it with more resolution ?

Am I spiking the airflow on a shift that its banging off the top cell ?
decipha
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Re: Perload exceeded on Shift

Unread post by decipha »

5.12 in the a9l2

if you pegging the maf the only option is to upgrade the maf
Brewster
Posts: 41
Joined: 15 May 2021, 15:59
Location: Edmonton, Alberta, Canada
Vehicle Information: 1992 Mustang LX
347 Cui
AFR 185

Re: Perload exceeded on Shift

Unread post by Brewster »

But how is it pegging the maf, on Pro M website it says the maf is good for 500 hp and this thing is only making 260 rwhp.

Any chances anyone has seen the log where it trips out perload on the 1-2 shift? Is that what is happening is pegging ?
decipha
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Re: Perload exceeded on Shift

Unread post by decipha »

its not pegging the maf just spiked it

its not perload thats the issue it looks like it was the maf either not set to max 5.12 volt / 1024 ad counts or the two step patch was corrupted.

this should fix her all up.
Attachments
Final-V1_fixed.bin
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Brewster
Posts: 41
Joined: 15 May 2021, 15:59
Location: Edmonton, Alberta, Canada
Vehicle Information: 1992 Mustang LX
347 Cui
AFR 185

Re: Perload exceeded on Shift

Unread post by Brewster »

I've noticed I had to raise the two step rpm limit up to 6500 rpm or else on a wot pull it activates it, something must be corrupted?

Raising the maf upper cell to 5.12 seems to have fixed the issue I was having.

Next issue I noticed is whether spout is out or in it doesn't seem to make much of a difference to spark at idle which hangs around 11-13 deg. Is idle spark what's commanded in the sea level table ? sea level shows it should be higher. Let me know if I should create a separate thread for this. Pretty much just trying to cover my bases atm with any issues lingering and getting cold starts and idle sorted.
decipha
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Re: Perload exceeded on Shift

Unread post by decipha »

nah idle spark comes from the modifiers.
Brewster
Posts: 41
Joined: 15 May 2021, 15:59
Location: Edmonton, Alberta, Canada
Vehicle Information: 1992 Mustang LX
347 Cui
AFR 185

Re: Perload exceeded on Shift

Unread post by Brewster »

Just read over the Timing write up, Under the GUFB I didn't see much about idle spark. Also checked through the tune and didn't see much for modifiers that may be adding or subtracting. When you say spark comes from the modifiers do you mean there mostly zeroed out and its something that has to be played with, if so what tables best suited?

Why do I have the two step kicking in ?
decipha
Posts: 1176
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gmc 2500hd classic
gt40p explorer
Marauder
Chrysler 300 AWD hemi
3.5 Explorer

Re: Perload exceeded on Shift

Unread post by decipha »

type in idle spark and the modifiers will pop up

cuz the two step code was inverted
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