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Old 04-17-2004, 12:57 AM   #1
Blennophobic
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Member#: 25886
Join Date: Oct 2002
Chapter/Region: E. Canada
Location: Ottawa area
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2003 WRX Rally Blue
- sold, waiting for 2015s

Default Progressive Boost Map for Newb UTEC Tuners - ver 4.2 OLF only

Here is what I came up with to replace the non-existent boost map in the TXS stg1 base map. The base map gave me jerky transition from ECU to UTEC and some pretty serious knock once I got the boost dialed in to a reasonable level. I use this boost map with 2-turns on the ABC and it gives me 16psi peak boost. I have OLF transition set to 35%. This map has pretty well eliminated the jerky transition and so far (knock on wood) there is no knock.

Feel free to try this map, and if it works for you, use it forever in good health. No royalties, fees, or any other strings are attached. Here's hoping the formatting is readable after I cut and paste...

Boost Map
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PS. Be sure to double check your peak boost and scale it accordingly to achieve your target and not over-boost. Special thanks to the creator of the "Utecedit" application. I couldn't have done without it! It's available for d/l over at wrxhackers.com
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Last edited by Blennophobic; 04-17-2004 at 01:15 AM.
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Old 04-17-2004, 02:11 AM   #2
nhluhr
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Default

you can feel free to put higher CLB numbers in the low rpm sites - that will help (ever so slightly) to bring boost up fast when you're starting at low rpms.... I think putting whatever your max CLB number is would be fine all the way down to 0rpm
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Old 04-17-2004, 02:40 AM   #3
hippy
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yeh, I don't think the jerkin problem is with the boost map(could be wrong).....
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Old 04-17-2004, 12:10 PM   #4
Blennophobic
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2003 WRX Rally Blue
- sold, waiting for 2015s

Default

I forgot to mention that I consider this a conservative boost ramp which would sacrifice some low-end torque. My primary goal was to smooth the UTEC transition which I think worked out pretty well. It loses a bit of the torque kick, but I think it`s a good starting point for newb stage 1 tuners.
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Old 04-17-2004, 01:46 PM   #5
hippy
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Conservative ramp? Why do you have lower numbers in lower rpm points of the same column? Do you really think that's a good boost map for new tuners? Closed loop boost is not like open loop. If you want a conservative spool, set the gain higher. You can have the same boost number all the way down one column from 500rpm to whatever rpm you want the boost to start ramping down.......

peace
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Old 04-17-2004, 04:17 PM   #6
Blennophobic
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2003 WRX Rally Blue
- sold, waiting for 2015s

Default

I don't follow your logic. Why would anyone want the same CLB target at 2000 rpm as at 3500? Since it's a target, I might as well set it to something realistic. Given the turbo doesn't produce as much boost down low, you can get away with the same numbers in the lower rows, but my point is I found this map to help a lot in reducing the effect of the rough cross-over... why don't you give it a try and let us know how it goes?
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Old 04-17-2004, 08:10 PM   #7
hippy
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Quote:
Why would anyone want the same CLB target at 2000 rpm as at 3500? Since it's a target, I might as well set it to something realistic.
Because the utec will ramp the boost up quicker when it's farther away from the target boost. If you want a target boost at a given tps, then you can put that number down the whole column. The ramping of numbers upward from low to high rpms is not normal. It will only change how the turbo spools at low rpms. Changing the gain will change how the turbo ramps at any rpm. No offense, but I don't need to try your map to see what it will do. On the same note, I have a totally different setup from you, so yadayadayada. If I were you, I'd raise the numbers in the lower rpm points......

peace
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