ddillenger

I've read a lot of arbitrary numbers, some stating 50 percent, others 62 percent, still others 75 and 80 percent.

Has anyone confirmed this with any sort of certainty? My money's on 77 percent right now, but I won't be able to confirm until the end of the week. I'm not sure anyone will know, but is this the primary method used to de-tune the M156 as used in this application?

Thanks in advance

JRHolt

I would contact one of the tuners on this board, they should have that information

kimeran

I'd like to know that as well, assume the P31 would be slightly higher?

AMG893

I think from memory it was 68 or 7x

I remember Jeremy showing me when he did my Tune

dubzAMG

Throttle angle on a tuned c63 is 87.5

ddillenger

It can be whatever you want it to be I suppose, but I was curious as to factory

str8six

Per Jeremy of OE tuning when I asked the same question: "Showing 87% TPS is actually 100% open. I have verified via a camera I have placed in to monitor throttle position. This is the same among all Benzes"

BLKROKT

Wait..... what'd he do, stick a scope down there with the car stationary in a garage? I'd think it'd be hard not to get a camera sucked in, but I guess there's always a way to rig it if you want. Interesting way to confirm...

kimeran

Anybody know what's the standard throttle position for a stock 63, P31 and 507?

odonnks

I've not looked at a MB but have at others. It'd be tough to gage the percent open by sight unless there is are index marks.
How are you visually determining the actual position of the plate?

I have bore-scopes that can easily video or photo this but without some visual index I can't see being able to tell 75 from 70 or 80 percent (visually).
I realize the TPS provides feedback but I believe we are talking about visual verification. Correct ?