Author Topic: Clamping the MAP sensor??  (Read 4245 times)

Offline Big Tone

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Re: Clamping the MAP sensor??
« Reply #10 on: 31 October 2010, 21:23 »
I agree, the actual boost is "limited" but how is the boost physically increased? Is it like driving with no wastegate control? Sorry if you are lost, I am too

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Offline topher

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Re: Clamping the MAP sensor??
« Reply #11 on: 31 October 2010, 22:49 »
Just another version of a resistor mod. Messing with ecu signals is not a good idea imo.

Offline RTechUK

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Re: Clamping the MAP sensor??
« Reply #12 on: 01 November 2010, 09:52 »
The AUMs doesn't really have a boost table. It does everything based on specified load, which is made up from many sensor readings, temp and rpm. so the reading for load comes from air mass flowing into the intake manifold.
 The only way to cheat a bit more power is use a MBC and add around 300mb (max) any more and you will get a call for limp mode and throttle cut.  Unless your tuner has taken the KFDLULS (MAP for Delta pressure for overboost protection ) up from 400mb to 500mb+. If he has raised this map then in theory you can cheat a bit of boot and more power. 

The lambda tables which go closed loop are based on many factors, which mean you can add more boost and still runs safe fuel/air ratios.



Nick



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Offline Big Tone

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Re: Clamping the MAP sensor??
« Reply #13 on: 01 November 2010, 21:35 »
How would you do this?
Bypass the n75 with an mbc or put it between that and the tip?

Also setting one up, would you start fully closed and "inch" it open until you see actual boost 300mb higher than requested?

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Offline Purely VAG

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Re: Clamping the MAP sensor??
« Reply #14 on: 01 November 2010, 22:12 »
Is this not like driving into a road thats sign posted a dead end?

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Offline RTechUK

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Re: Clamping the MAP sensor??
« Reply #15 on: 01 November 2010, 22:17 »
How would you do this?
Bypass the n75 with an mbc or put it between that and the tip?

Also setting one up, would you start fully closed and "inch" it open until you see actual boost 300mb higher than requested?

The best way to go is use an electronic controller with duty cylce, then just work the DC% up until the boost you want has been met, the good controllers have built in boost gauges.



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Offline tech1889

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Re: Clamping the MAP sensor??
« Reply #16 on: 01 November 2010, 22:28 »
apexi avcr ??
Mk4 Golf GTI anniversary and mk6 golf tdi :)

Offline Big Tone

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Re: Clamping the MAP sensor??
« Reply #17 on: 02 November 2010, 13:02 »
So don not install one before/in parrallell with the N75 and use this to bleed more air off than the n75 will do?

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Offline Purely VAG

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Re: Clamping the MAP sensor??
« Reply #18 on: 02 November 2010, 20:57 »
apexi avcr ??

Very nice bit of kit that.

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Offline tech1889

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Re: Clamping the MAP sensor??
« Reply #19 on: 02 November 2010, 22:32 »
mate has one in his 200sx and i love it get it with the gameboy controller even more fun.. gadgets ay  :cool:
Mk4 Golf GTI anniversary and mk6 golf tdi :)