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Microtech How to street tune a microtech?

Old 10-08-08, 05:57 AM
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How to street tune a microtech?

I was wondering is there a method to doing a proper street tune. I am not sure what are good figures to start off with in both my rpm_wot map and Load map. I mean, using 850cc x 4 @ 15psi, that are the ballpark figures I should be sitting in those screens? Because it seems like I can use either to get my a/f's down, but what balance will provide a smooth acceleration while under full boost and slowly accelerating? Thanks for everyones patience with my constant questions on the same stuff.... just trying to learn my setup as much as possible , so maybe one day I wont have to rely on other people as much...
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Old 10-08-08, 08:35 AM
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Switch to Matrix mode and ignore "carburetor mode" as a first step.

You'll then have a 3D table of injector values per RPM and MAP loadpoint. The cursor will follow the car on the map and you can adjust your injector times from there. This really requires two people.
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Old 10-08-08, 10:06 PM
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yea i agree with aaron, i drove my car and have a friend in the car on the laptop. while i get it into the load cell that needs adjusting i tell him to hit the spacebar and it shows a freeze frame of where i need it corrected. he will then adjust the fuel accordingly.
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Old 10-09-08, 06:17 AM
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I will try Matrix mode. I did not know about the freeze frame either. I have been just been doing alot of trial and error. How did you know it needs to be corrected from viewing the laptop. or do I tell him when my a/f's are incorrect?
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Old 10-09-08, 11:08 AM
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Damn, I forgot about the space bar trick! That's going to make my solo tuning a lot easier.

At the very least you will need a wideband to tune correctly. Cruise and idle can be done by feel usually but you will still want some feedback as to the actual ratios. Widebands are easiest for this. EGT works well too if you know how to read it.
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Old 10-09-08, 05:43 PM
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when im doing a street tune, its a 2 man job.
I will do the driving when im doing cruise and use 3rd gear and the brakes to tune different loads and different rpms etc.

For full power runs. Friend will drive.
And do 4th gear runs from 2000rpm to redline. i watch datalogger and afrs.
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Old 10-11-08, 10:05 AM
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I never though about using breaks during accelartion to get the right boost levels.. thanks for the tip
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Old 10-11-08, 10:21 AM
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High gear and a hill works as well.
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