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19:32:13 - 04/25/2024
Dakota Performance
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Shawn
Gen III
 
5/31/2001
00:31:09
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 Subject: 4900RPM Flatline, WTF???
IP: Logged
Message:
Hey folks,
Just curious, I’m waiting on a PowerDyne supercharger and had my PCM flashed by Leach for the SC. Well, now at WOT I flat line at 4900RPM, no stutter, not like the engine is dying, almost like a governor plate on it. It stays PEGGED on 4900RPM’s until I let off, what gives, WTF? When I back off the throttle it will shift and then flat line at 4900 again. I’m wondering whether I’m just out of air and dumping fuel that can’t burn or if Leach set my RPM limiter WAY too low and messed the shift points up. Below are my current mods, then the rest of them I’m waiting on. I could really use some input on this one as it’s REALLY annoyingJ.
Thanks,
Shawn
98 5.2L 4x4 CC
Current Mods
50mm Flow Metrics TB
Gibson Dual 3” Catback
IAT Adjuster (I’ve tried adjusting it to no avail for this problem)
K&N Cold Air Intake
Electric Fan with no Fan Clutch
180 T-Stat
Autolite 3922’s
24# Ford Motor Sports Injectors
Custom Flash by Leach for All the above mods + the ones listed below
On the Way
Powerdyne 9PSI Supercharger with Belt Tensioner
JBA Ceramic Headers and Y-Pipe
M1 Intake Manifold
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Bernd
Gen III
5/31/2001
08:49:05
|  RE: 4900RPM Flatline, WTF???
IP: Logged
Message:
Shawn,
If you're running the PCM without the blower...there's your problem. The custom flash is designed for a supercharged engine...not normially aspirated (timing retarded and fuel enrichment).
1997 Dodge Dakota SLT - V6
Supercharged @ 10#
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Shawn
Gen III
5/31/2001
13:25:15
|  RE: 4900RPM Flatline, WTF???
IP: Logged
Message:
Cool, just making sure, it's pretty freaky not to be able to floor it.
Thanks for the FYI,
Shawn
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