Perload switch

Covers most all 98 fords including mustang v6, v8, cobra, lincoln town car, grand marquis and crown vic.
SOAB_465
Posts: 32
Joined: 2022 Dec 06, 15:24
Location: Alberta, Canada
Vehicle Information: 1998 Ford Mustang GT 5 speed box code BAI1, CRAI8
stock return fuel system with Walbro 255 in-tank pump and aeromotive adjustable regulator.

2008 4.6
PI Heads and Cams
9:1 forged pistons
Forged H-Beam Rods
60lb Deka injectors
BA2800 MAF
2.3L whipple supercharger intercooled approx 13 PSI

- tuning with TunerProRT

PLX Wideband
GM 3bar MAP

Perload switch

Unread post by SOAB_465 »

I'm not able to find the PRLDSW scalar in the CRAI8 xdf, does anywone know what to search for?

There's no FN035, but FN035A is properly populated with maximum load at 0"vac/0boost. Load at WOT goes up to ~1.42, but perload never exceeds 1.00 in the datalog.

The MAF curve is dialed in well, but I'm not getting enough power enrichment under boost, and I don't want to tear into the base fuel table if I can easily fix PERLOAD to go into the part of table it should be using.
red5.0fogger
Posts: 151
Joined: 2021 Mar 22, 15:58
Location: Newington CT
Vehicle Information: 1986 Mustang GT, Stock block, TFS 170 Heads , N41 cam, ported cobra intake, nitrous, T5 , 3.73s

Re: Perload switch

Unread post by red5.0fogger »

On the foxbody it's a flag, not in scalars.
SOAB_465
Posts: 32
Joined: 2022 Dec 06, 15:24
Location: Alberta, Canada
Vehicle Information: 1998 Ford Mustang GT 5 speed box code BAI1, CRAI8
stock return fuel system with Walbro 255 in-tank pump and aeromotive adjustable regulator.

2008 4.6
PI Heads and Cams
9:1 forged pistons
Forged H-Beam Rods
60lb Deka injectors
BA2800 MAF
2.3L whipple supercharger intercooled approx 13 PSI

- tuning with TunerProRT

PLX Wideband
GM 3bar MAP

Re: Perload switch

Unread post by SOAB_465 »

Thank you! I was definitely looking in the wrong spot, but it's also not listed in flags, so I'm still not sure what I should do with my perload situation.
red5.0fogger
Posts: 151
Joined: 2021 Mar 22, 15:58
Location: Newington CT
Vehicle Information: 1986 Mustang GT, Stock block, TFS 170 Heads , N41 cam, ported cobra intake, nitrous, T5 , 3.73s

Re: Perload switch

Unread post by red5.0fogger »

I know it will take a while but just look at everything. Read the comments as you hover of them. Hopefully the Decipha himself will assist soon.
decipha
Posts: 5052
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Perload switch

Unread post by decipha »

i hadn't put the prldsw flag in there

the crai8 xdf is very basic for now
SOAB_465
Posts: 32
Joined: 2022 Dec 06, 15:24
Location: Alberta, Canada
Vehicle Information: 1998 Ford Mustang GT 5 speed box code BAI1, CRAI8
stock return fuel system with Walbro 255 in-tank pump and aeromotive adjustable regulator.

2008 4.6
PI Heads and Cams
9:1 forged pistons
Forged H-Beam Rods
60lb Deka injectors
BA2800 MAF
2.3L whipple supercharger intercooled approx 13 PSI

- tuning with TunerProRT

PLX Wideband
GM 3bar MAP

Re: Perload switch

Unread post by SOAB_465 »

oh ok, it's running fine, but the MAF is still calibrated up to get enough fuel in boost. I guess I just need to understand what the perload logic is so I can set up the fuel table properly. Right now perload clips at 1.00
decipha
Posts: 5052
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Perload switch

Unread post by decipha »

that means its using inferred load prldsw==2

info is in the fuel write up

you wont have access to it til i can get around to add it
decipha
Posts: 5052
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Perload switch

Unread post by decipha »

just posed a new xdf for you

enjoy
SOAB_465
Posts: 32
Joined: 2022 Dec 06, 15:24
Location: Alberta, Canada
Vehicle Information: 1998 Ford Mustang GT 5 speed box code BAI1, CRAI8
stock return fuel system with Walbro 255 in-tank pump and aeromotive adjustable regulator.

2008 4.6
PI Heads and Cams
9:1 forged pistons
Forged H-Beam Rods
60lb Deka injectors
BA2800 MAF
2.3L whipple supercharger intercooled approx 13 PSI

- tuning with TunerProRT

PLX Wideband
GM 3bar MAP

Re: Perload switch

Unread post by SOAB_465 »

man you've been one one today! Thanks for all your help
Post Reply