its scary to buy a micro tech they dont start in the cold
 

why spend so much money and they dont even start in the cold
there should be a parameter for cold climates

there is.... its called water and air temp correction maps. i have never had a problem starting my car in freezing weather.

lol

do you have a pic of it..i cant find it

Huh?

Microtechs have a cold cranking map and air/water timing/fuel temperature correction maps like any other ECU. They also have afterstart enrichment like all other ECUs.

Where are you getting this misinformation?

It has been in the 20s all week long and my car starts right up and is not even 100% tuned.
Water map and Air temp map adjust them maybe you are not getting enough fuel or getting to much.

it came with the car my brother bought ..we tried googling it but we have no info ...it started before when we had 50degree whether ...now it dont

get it tuned then.

It needs to be tuned, plain and simple. The ECU was probably tuned in warm weather and then left alone. An experienced tuner can guess well enough based on previous settings, but all the fine tuning needs to be done in the appropriate conditions.

The process is the same regardless of the ECU used. Even if it is something as archaic as the Microtech.

i read the manual i cant find the cold cranking

did you read the manual???? i posted a link to it a few posts up. the cranking,air temp and water temp correction map are on page 19 of the pdf file and are screens 20,21, and 22 in the computer.

thanks so much...i know ill have to have my tuner set it up
but can you share your setting to give an idea ,,,i now every car is differant

injector sizes influences alot also like you say every engine its different.

theres a walboro fuel pump ...2 1000cc 2-720cc, a bnr stage 2 turbo..

I'm sure its not the Microtech. My car started today (also in the 20s)

I had the same problem on my lt-8, but didn't even have a chance to tackle the problem because my car got stolen lol.

My brother has the lt-8s and he dd's it. It was in the 30's in riverside a couple weeks ago and his car starts up fine.

it basically a surprise when my brother bought the car and the seller did not say there was a micotech in there ..we have no clue on microtech ..so we tried to do some research but still could not get the car to start in the cold
so now we have the manual we just dont understand where we should start
we have a tuner t&r but they do haltech all we need is a map to get it started

or some base parameters to go by and adjust accordingly

where in ct you are located.

What happens when you try to start the car?

Does it crank forever and not catch?

Does it start and then immediately stall?

Please describe in detail what the issue is and we can suggest settings to change.

Try this for 720/1000



Idle Map
Screen 1

30" ~ 1.38
25" ~ 1.48
20" ~ 1.33
15" ~ 1.71
10" ~ 2
05" ~ 2.1
00" ~ 2.56
2-20psi ~ 4.95

Load Map
Screen 3

30" ~ 0.95
25" ~ 1.19
20" ~ 1.33
15" ~ 1.71
10" ~ 2.14
05" ~ 2.57
00" ~ 3.56
2psi ~ 2.9
4psi ~ 3.9
6psi ~ 4.7
8psi ~ 5.1
10psi ~ 5.6
14psi ~ 6.2
16psi ~ 6.8
18psi ~ 7.4
20psi ~ 8

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 ~ 00
Pump1Pulse ~ 04
Pump1Trig ~ 18
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 ~ 10
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
7500 ~ ??
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 ~ 00
6psi ~ 02
8psi ~ -04
10psi ~ -06
14psi ~ -10
16psi ~ -12
18 psi ~ -16
20 psi ~ -20

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 ~ 2000
MAPstg ~ 02"
%stg ~ 50

thanks for being understanding ill give that a try

theres a few base maps stickied to the top of this forum also. you couldve looked there first

i did

where i ct you are located i could probably help you.

waterbury

you are not to far im in williumantic

thats cool your close do you have problems in the cold ..we got hit pretty bad this year

not when the car have a fully charge battery.

i tried that map it worked whooooooooo
im going to try it today it supposed to be in the single digits
thanks so much

can anyone explain how the map works to help in the cold weather

also when it warms up in new england will i have to change maps

When it gets warm, You wont need to change nothing, The coolant/water map should take care of it.

Its time to change the tittle of the thread now, I told you it wasn't the Microtech:nod:

your right
it was just the map
when i changed the map to the one on this thread it started right up

it would be nice to have a built in map for west coast and eastcost lol

If you just plugged in the map posted, you shouldn't run the car under load until it is properly tuned. It may be too rich, it may be too lean, etc.

You'll also have to fine tune the rest of the map. Then wait until the weather is warmer so you can adjust the temperature maps so the car runs correctly under all conditions.

USe your old map and use the colder temp settings off my map

well we bought the car and discovered we had the microtech...we had no clue on it untill we used the search button
but thanks to you guys we were able to get it started
weve only drove around the block a few time
the only tuners we now
are t&r racing but they tune haltech
so now were trying to do some research on understang how to use it then

then find a tuner
no boost for us until we get a good tuner

ralph in new haven i belve his shop its call auto authority.

Oh have we heard these words before! hehe, glad you figured it out.