sierra wrote:You could run 20psi without the Chipit and scanguage will read accurately.
Once you intercept the MAP reading with the Chipit the 22psi? ECU limit will be raised and the scanguage will read lower than the actual boost by the amount it's been massaged to raise the limit.
Something like that!
Cowboy Dave wrote:Yeah this is one of those threads that needs a reminder every so often that it only applies to the MLs.
irwazza wrote:Sorry, I can't see why your scanguage would show 2psi extra after this mod but it actually isn't producing extra 2psi??
irwazza wrote:Sounds like your talking MN there mate..
odie602r wrote:But in addition, I think with the chip IT showing the ecu a lower than expected MAP pressure this in turn makes the ecu develop slightly more boost (I think 2-6psi depending on tune number) resulting in an overall net increase of actual boost.
The scan gauge reading thus becomes an underestimate though, so it might still be reading 15psi, but the actual boost is now 17 or 18 psi (for example), because of chip IT's intercepting skills. This is also how the torque gains are able to be made. This is why running a separate boost gauge if you want to know actual boost psi is necessary.
I think .....
Cowboy Dave wrote:I thought to get more boost on the ML you needed a boost controller?
irwazza wrote:odie602r wrote:But in addition, I think with the chip IT showing the ecu a lower than expected MAP pressure this in turn makes the ecu develop slightly more boost (I think 2-6psi depending on tune number) resulting in an overall net increase of actual boost.
The scan gauge reading thus becomes an underestimate though, so it might still be reading 15psi, but the actual boost is now 17 or 18 psi (for example), because of chip IT's intercepting skills. This is also how the torque gains are able to be made. This is why running a separate boost gauge if you want to know actual boost psi is necessary.
I think .....
You were relating to the MN electronic controlled turbo in this post.
All good mate, you are correct in saying the chip it will give a false boost reading to the ecu, a boost gauge is required for correct readings.
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