Microtech backfiring and hard/no start
#1
backfiring and hard/no start
i have this problem that the car backfires on cranking and really loud to my ears are still ringing. if the car dose start then it seems like it is running on only one rotor then it stars running on 2 rotors. here is my setup have 550/1600 and have verified that the timming is set right. have pulled the plugs and cleaned them off. they were a little wet. cleared out the motor and nothing.
Idle Map
Screen 1
30" ~ .95
25" ~ .95
20" ~ 1.14
15" ~ 1.44
10" ~ 1.71
05" ~ 1.91
00" ~ 2.14
2-20psi ~ 4.95
Load Map
Screen 3
30" ~ 0.95
25" ~ 0.95
20" ~ 1.13
15" ~ 1.44
10" ~ 1.81
05" ~ 2.24
00" ~ 2.56
2psi ~ 2.2
4psi ~ 3.4
6psi ~ 3.9
8psi ~ 4.6
10psi ~ 5.1
14psi ~ 5.7
16psi ~ 6.0
18psi ~ 6.6
20psi ~ 7.1
RPMwot Map Screen 17
5000 ~ 05
5500 ~ 08
6000 ~ 08
6500 ~ 10
7000 ~ 11
7500 ~ 11
8000 ~ 11
9000 ~ 12
The rest are zero
RPMcrs Screen 18
1000 ~ -12
1500 ~ -11
2000 ~ -12
THe rest are zero
Pump Map
Screen 19
Pump2Start ~ 2000
Pump1Amt ~ 15
Pump1Pulse ~ 04
Pump1Trig ~ 10
Pump1Stop ~ 00
Pump1Adv ~ 05
Pump2Time ~ 10
Pump2Amt ~ 30
Pump2Trig ~ 16
Pump2Stop ~ 00
Pump2Adv ~ 05
PumpDwell ~ 3.00
PumpTimers ~ No
Pump1Sync ~ No
PumpSpare ~ 00
PumpCold ~ 00
Water Map
Screen 20
-25 ~ 0
-17 ~ 70
-9 ~ 60
-01 ~ 50
05 ~ 45
11 ~ 45
18 ~ 42
24 ~ 34
31 ~ 26
38 ~ 24
46 ~ 19
60 ~ 12
68 ~ 06
82 ~ 0
99 ~ 0
124 ~ 0
Air_t Map
Screen 21
-25 ~ 0
-17 ~ 8
-9 ~ 6
-1 ~ 5
5 ~ 4
11 ~ 3
18 ~ 3
24 ~ 0
31 ~ 0
38 ~ 0
46 ~ 0
60 ~ 0
68 ~ 0
82 ~ 0
99 ~ 0
124 ~ 0
Crank Map
Screen 22
-25 ~ 72
-17 ~ 72
-9 ~ 72
-1 ~ 67
5 ~ 62
11 ~ 57
18 ~ 50
24 ~ 41
31 ~ 31
38 ~ 26
46 ~ 20
60 ~ 15
68 ~ 5
82 ~ 0
99 ~ 0
124 ~ 0
t*rpm
Screen 23
Idle ~ 00
1000 ~ 10
1500 ~ 15
2000 ~ 20
2500 ~ 25
3000 ~ 25
3500 ~ 25
4000 ~ 25
4500 ~ 25
5000 ~ 25
5500 ~ 25
6000 ~ 25
6500 ~ 25
7000 ~ 25
8000 ~ 25
9000 ~ 25
t*map Map
Screen 24
Idle ~ 00
25 ~ 05
20 ~ 04
15 ~ 03
10 ~ 02
05 ~ 00
00 ~ 00
2psi ~ 00
4psi ~ 03
6psi ~ 05
8psi ~ -07
10psi ~ -09
14psi ~ -13
16psi ~ -17
18 psi ~ -21
20 psi ~ -25
t*air Screen 25
Correction value Is expressed as number of degrees
you wish to advance or Retard to the Ignition curve
and values Is set at zero.
t*gap
Screen 26
0500 ~ 15
1000 ~ 15
1500 ~ 15
2000 ~ 14
2500 ~ 12
3000 ~ 10
3500 ~ 10
4000 ~ 10
4500 ~ 10
5000 ~ 10
5500 ~ 10
6000 ~ 10
6500 ~ 10
7000 ~ 10
8000 ~ 10
t*Inj Map
Screen 27
0500 ~ 120
1000 ~ 150
1500 ~ 150
2000 ~ 150
2500 ~ 150
3000 ~ 150
3500 ~ 150
4000 ~ 150
4500 ~ 180
5000 ~ 210
5500 ~ 210
6000 ~ 240
6500 ~ 240
7000 ~ 270
8000 ~ 270
9000 ~ 270
t*wat Map Screen 28
ANd the rest are zero
Option Map
Screen 30
Af_StE ~ 10
Dwell ~ 3.25 *set at Time Base - not at Duty Cycle*
REVstg ~ 1320
MAPstg ~ 02"
%stg ~ 50
Idle Map
Screen 1
30" ~ .95
25" ~ .95
20" ~ 1.14
15" ~ 1.44
10" ~ 1.71
05" ~ 1.91
00" ~ 2.14
2-20psi ~ 4.95
Load Map
Screen 3
30" ~ 0.95
25" ~ 0.95
20" ~ 1.13
15" ~ 1.44
10" ~ 1.81
05" ~ 2.24
00" ~ 2.56
2psi ~ 2.2
4psi ~ 3.4
6psi ~ 3.9
8psi ~ 4.6
10psi ~ 5.1
14psi ~ 5.7
16psi ~ 6.0
18psi ~ 6.6
20psi ~ 7.1
RPMwot Map Screen 17
5000 ~ 05
5500 ~ 08
6000 ~ 08
6500 ~ 10
7000 ~ 11
7500 ~ 11
8000 ~ 11
9000 ~ 12
The rest are zero
RPMcrs Screen 18
1000 ~ -12
1500 ~ -11
2000 ~ -12
THe rest are zero
Pump Map
Screen 19
Pump2Start ~ 2000
Pump1Amt ~ 15
Pump1Pulse ~ 04
Pump1Trig ~ 10
Pump1Stop ~ 00
Pump1Adv ~ 05
Pump2Time ~ 10
Pump2Amt ~ 30
Pump2Trig ~ 16
Pump2Stop ~ 00
Pump2Adv ~ 05
PumpDwell ~ 3.00
PumpTimers ~ No
Pump1Sync ~ No
PumpSpare ~ 00
PumpCold ~ 00
Water Map
Screen 20
-25 ~ 0
-17 ~ 70
-9 ~ 60
-01 ~ 50
05 ~ 45
11 ~ 45
18 ~ 42
24 ~ 34
31 ~ 26
38 ~ 24
46 ~ 19
60 ~ 12
68 ~ 06
82 ~ 0
99 ~ 0
124 ~ 0
Air_t Map
Screen 21
-25 ~ 0
-17 ~ 8
-9 ~ 6
-1 ~ 5
5 ~ 4
11 ~ 3
18 ~ 3
24 ~ 0
31 ~ 0
38 ~ 0
46 ~ 0
60 ~ 0
68 ~ 0
82 ~ 0
99 ~ 0
124 ~ 0
Crank Map
Screen 22
-25 ~ 72
-17 ~ 72
-9 ~ 72
-1 ~ 67
5 ~ 62
11 ~ 57
18 ~ 50
24 ~ 41
31 ~ 31
38 ~ 26
46 ~ 20
60 ~ 15
68 ~ 5
82 ~ 0
99 ~ 0
124 ~ 0
t*rpm
Screen 23
Idle ~ 00
1000 ~ 10
1500 ~ 15
2000 ~ 20
2500 ~ 25
3000 ~ 25
3500 ~ 25
4000 ~ 25
4500 ~ 25
5000 ~ 25
5500 ~ 25
6000 ~ 25
6500 ~ 25
7000 ~ 25
8000 ~ 25
9000 ~ 25
t*map Map
Screen 24
Idle ~ 00
25 ~ 05
20 ~ 04
15 ~ 03
10 ~ 02
05 ~ 00
00 ~ 00
2psi ~ 00
4psi ~ 03
6psi ~ 05
8psi ~ -07
10psi ~ -09
14psi ~ -13
16psi ~ -17
18 psi ~ -21
20 psi ~ -25
t*air Screen 25
Correction value Is expressed as number of degrees
you wish to advance or Retard to the Ignition curve
and values Is set at zero.
t*gap
Screen 26
0500 ~ 15
1000 ~ 15
1500 ~ 15
2000 ~ 14
2500 ~ 12
3000 ~ 10
3500 ~ 10
4000 ~ 10
4500 ~ 10
5000 ~ 10
5500 ~ 10
6000 ~ 10
6500 ~ 10
7000 ~ 10
8000 ~ 10
t*Inj Map
Screen 27
0500 ~ 120
1000 ~ 150
1500 ~ 150
2000 ~ 150
2500 ~ 150
3000 ~ 150
3500 ~ 150
4000 ~ 150
4500 ~ 180
5000 ~ 210
5500 ~ 210
6000 ~ 240
6500 ~ 240
7000 ~ 270
8000 ~ 270
9000 ~ 270
t*wat Map Screen 28
ANd the rest are zero
Option Map
Screen 30
Af_StE ~ 10
Dwell ~ 3.25 *set at Time Base - not at Duty Cycle*
REVstg ~ 1320
MAPstg ~ 02"
%stg ~ 50
Trending Topics
#12
well i thought that i was all ready for the dyno but i checked everything and found a werd vac signal to the microtech. so i fixed it and know the car runs like crap. with the vas unpluged it runs way better. you think that it is a tunning issue. i just dont want to go to the dyno and pay for it then figure out that something else is wrong.
#15
talking head
though personally i find some variance in "1600" injectors
and also response differences between saturated and peak hold primaries
i find i am between 93 and 98 % usually for these combos
from the admin at micro forums -
Originally Posted by rxeng
If you are running 550cc injectors all round then 50% will work fine
so why is your staging value 50%???????
its because the map is bandaided in the higher WOT maps in the 2.5 D tune
and because the car is almost certainly staged at any WOT
so all numbers are set for the flow of 1600+550 , or 1600 + 1000
( or whatever funky combo the source had )
IMO this shows a distinct lack of understanding by the original tuner
it may work, but its all bandaids, and the staging **** pointless
as it is basically running four on anything but idle
---------
well i thought that i was all ready for the dyno but i checked everything and found a werd vac signal to the microtech. so i fixed it and know the car runs like crap. with the vas unpluged it runs way better. you think that it is a tunning issue. i just dont want to go to the dyno and pay for it then figure out that something else is wrong.
unplugged = never will stage and run all the injectors
( it will never see 2 psi )
[ if your switch point is 2 inch hg instead, the opposite may be true
also may switch in and out depending on atmospheric and MAP sensor calibration ]
plugged in, it sees 1320 rpm just off idle, so any WOT movement will see the turbo boost and trip the staging
with that 50% value in the staging, its adding 50% to the PWM BEFORE it stages
( ie the primary for that rotor is the bin value + 50% )
when it stages, all 2 injectors for that rotor run the SAME signal
( and the staging value is no longer added to the primary bin value )
BUT you have 550 and 1600
that is, say your asking for 1 ms on rotor 1
1 + 50 % = 1.5 ms x 550 cc= 8.25 cc fuel
staging then happens
1ms + ( 0 % ) x 550 cc + ( 1ms x 1600 cc )
= 5.5 cc + 16 cc
= 21.5 cc of fuel at the staging instant
IE one second to the next at the stage point , 8.25 cc becomes suddenly 21.5 cc
nearly 300% the FUEL FLOW THE INSTANT BEFORE
since yours stages at any throttle movement above 1320 revs
( where the motor isnt really needing a lot )
it is pretty obvious to see why it runs shitty isnt it??
[ bare mind if switch point is 2 inch HG not 2 psi
then the staging is reversed when vac line broken, ie 4 injectors always on ]
sheesh
FFS, read the micro site
dont take silly maps from the net
especially when you see the source at odds to the official website !!
are the alarms ringing or what????
Last edited by bumpstart; 01-21-09 at 09:04 PM. Reason: punctuation 101
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