using E70 N62B48B Throttle body on E53 N62B44A

[pearlpower]

Originally Posted by Clockwork

Ok so I finally got my 3.625" (aka 3 & 5/8ths or 92.08mm) I.D. silicone hose from www.siliconehose.com (Flex Technologies) and I installed today.
I noticed on the factory air intake tube there are 3 small raised nipples that I trimmed down to the same diameter as rest of factory air tube OD.
See pics of me pointing to one of three and then I point to the barrier that I push the silicone hose up to and LIGHTLY tighten a hose clamp on. Too much tightening and the factory air tube crumples.
Then I push the other end of silicone hose onto the new (,to me) throttle body and push till it bottoms out (,just past the shiny metal rim).
I used a 2" silicone hose but I'd hugely recommend only using a 1" silicone hose but you can see how tight things are in my pics and how much my hose from the Dinan air box has to bend to accomodate the install of silicone hose. Would have to be bent less of a 1" hose only was used.
Note that you will have to trim the black wire holder, if you want to continue using.

Now to what you want to know.
With my Dinan air box, aftermarket Mapping by a local tuner, using a Pedal box set to the Green dot (linear setting), and after resetting the throttle body upon install, the vehicle is TORQUIE from a Dead stop!
During motion, the TB seemed to be a bit more responsive than just the 4.4 throttle body but nothing crazy.
I did not test with a Dyno what power was and I do not intend to now, as what is the point now since I have no baseline for my exact vehicle

For the price is say do it.


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Great post, thanks for sharing.