Maft Pro problem

kotu100

kotu100

Active Member
Nov 23, 2006
1,899
0
36
Easton, Ma
just installed my maft pro on my car, now whenever i hit the throttle it sputters before it revs up. the car wont die, and it also sputters at the higher RPM when i let off and hit it again.
other than that ir seems like its running good. any suggestions?
 
B

burlguy

New Member
Jul 29, 2006
18
0
0
Northern Ca
Mine was doing that same thing but it was because of the wire clips inside the maftpro plugs where broken. They sent me a bunch of them to replace the broken ones. I also had to turn down boost enrichment. That really made the car respond much better.
 
kotu100

kotu100

Active Member
Nov 23, 2006
1,899
0
36
Easton, Ma
So I'm sitting in the car now, it's been running a few minutes now so here's some of my readings at idle.
Tps: .56
mp: 35
dc: 96.3
afl: 3
afi: 0
ve: 53.5
cel: 0
fi: 0
fo: 19
ut: -25
bd: 0.0
mt: 100
o2: 0
fe: 100
asc: 100
ba: 97.1
bp: -9.1
ax1: .01
rs: 0
 
grimreaper

grimreaper

New Member
Jul 2, 2008
2,180
0
0
Dallas
part throttle tracking or is the ecu running the show?

nothing looks out of place with the readings.

My throttle response isnt the greatest when the car is cold. Is it at operating temps?
 
kotu100

kotu100

Active Member
Nov 23, 2006
1,899
0
36
Easton, Ma
I do not have tracking activated, I do have a lc-1 but I was just gonna tune it off the ecu using the low med and high range adjustments. I have the main scale set at -20 to compensate for the 550cc injectors. I've tried changing ms up to 0 and down to -50 with no changes to the symptoms, just changed the a/f. My fuel pressure is 38 with vac line off 30 with it on.
I'm on the way to walmart to find a serial to USB adapter.
oh and this happens upon startup and @ operating temperature.
 
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