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mbc only on stock chip? will it throw a code?

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Old 07-09-2005, 08:41 PM
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Default mbc only on stock chip? will it throw a code?

i dont want to turn up the boost, i just want to keep it at stock levels. i want to install it so its ready for when i throw the chip back in. if it will throw a code ill just wait till i do the chip.
Old 07-09-2005, 08:47 PM
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Default Nope, probably no code. I've run MBC only on stock chip several times (when I had K03s).

The only code I consistently got with stock chip and MBC (only and in parallel) was a MAF too high code, which would trigger the ABS and ESP lights IIRC. This was due to flowing "madd air y0" with all my crazy mods. Piggie and a few others have experienced the same thing when heavily modified on stock chip.
Old 07-09-2005, 08:49 PM
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Default nice

dumb question.. but what do i do with the 3rd vacuum line? the unused one? plug it?
Old 07-09-2005, 08:52 PM
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Default I assume you are talking about the 3rd line on the N75.

You leave that line on the N75...plus you leave the N75 electonically hooked up to the car so you don't throw a code.
Old 07-09-2005, 08:54 PM
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Default ok thats what i thought

i once saw a pic of the vacuum hose looping back to another side of the n75.

im so excited to hit the strip again im waiting on my DTS to arrive.
Old 07-09-2005, 09:27 PM
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Okay, I broke down and put my FATS time in that database you've got in your sig.
Old 07-10-2005, 03:30 AM
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Old 07-10-2005, 04:38 AM
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Default what about TCD? when i throw my X in im going to set it at 18psi

i read that you posted that around 6k you would have intermittent throttle cut. should i rig up a tcd? i have some diodes laying around. 4.3 and 4.7 zener's.
Old 07-10-2005, 06:03 AM
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The MBC will fix the TC, no need for a TCD.
Old 07-10-2005, 06:06 AM
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so, i wont get a DTC for boost deviation?


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