Vito 112 tuning options - Mercedes-Benz Forum
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#1 (permalink) Old 04-26-2010, 05:45 AM
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Vito 112 tuning options

Hi.

I'd like to improve the performance of my Vito 112. As well as a remap which I hope to have done in the next month, I'd like to know what other options are available - I'm not looking to spend a fortune but would appreciate any thoughts on the items below:


Remap:

I'll be taking advice from the guy who's doing the map, he's got a good reputation with vans and sounds like he doesn't take maps too far (I'd like the engine to live for a few years yet). Is there anything to look out for or ask him?


Turbo pressure / boost / adjustments:

I don't suffer any turbo problems, but I'm going to clean the actuator valve as it's probably never been done.

Is it possible to adjust the turbo pressure easily? if so, how?

Would there be any benefit from a bleed/dump valve? If so how woudl I go about finding/fitting one?


Exhaust:

Will a straight-through exhaust make a difference to performance & mpg?
Are there stock ones available for the Vito or would I need one made?


Air filter / induction:

I've seen a BMC induction kit available for ~£200 - more than I'd like to spend.

Although K&N or Pipercross panel filters are available, I'm not convinced these will make much difference.

There's no K&N induction kit listed as compatible with the Vito 112, but would it be possible to use another K&N induction kit designed for a TDi? has anyone tried this? is there a suitable one?


Is there anything else?


any help appreciated...
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#2 (permalink) Old 04-26-2010, 09:08 AM
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Well first off there is a bloke on here ozmotorsport who does remaps at a very reasonable price (I'm getting one soon also).

Adjusting your boost is easy, 10mm lock nut on the actuator >loosen that...
Then there is a fixed nut that you can adjust to adjust the waste gate.
You make the rod shorter to improve boost, don't get too carried away though! (a couple of turns maybe?) You won't see any drastic improvement out of this alone though as fuelling is the key to fast diesels...

I have a straight through exhaust and I must say the turbo spools up much quicker and peaks earlier... You get better fuel consumption too!

Does yours have an EGR? 2001>03 don't. If it does - ditch it/block it off.

As for an air filter, just get a decent high flow panel filter. You won't gain any from one of those BMC or K&N jobbies.
A bigger intercooler would be nice too, plus that would raise the boost again...
An expensive option but worthwhile.
You could also fit an override switch to the fan on your current intercooler.
Sky is the limit when it comes to tuning, you could go for a bigger turbo...
What's your budget?
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#3 (permalink) Old 04-26-2010, 02:59 PM
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Thanks for the reply.

I'll get in touch with oz if my mate can't do it or turns out expensive.

I'll experiment with the turbo - thanks for the suggestions.

It's a 1999, so I guess it does have an EGR. I'll have a look. How would you block it off?

budget is whatever is spare over the summer so nothing much, say about £300 on top of the remap. intercooler sounds interesting..
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#4 (permalink) Old 05-09-2010, 03:48 PM
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Hi mono!

What price have you been quoted for the remap and where are you based? I can map your van for a very very reasonable price . Im a top expert in vehicle electronics and have succesfully remapped a few 112'cdis and have achieved amasing responses!
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#5 (permalink) Old 02-06-2011, 04:00 PM
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Has anyone adjusted the actuator? If so what results did it give and how much adjustment was made?

Ive already had a remap, just want that little more, seems a bit laggy/slow on pickup. The revs dont seem to pick up quite as quick as i'd like them to.

Also, anybody got any good tips on brakes, what pads to use etc, my brakes arent terribly good!!

Cheers

Last edited by CDi112; 02-06-2011 at 04:03 PM.
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#6 (permalink) Old 02-07-2011, 03:37 AM
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Hi ya, as said before you are not going to gain much by adjusting the actuator rod, if the van overboosts it will go straight into safe mode. All you can do is make sure it is adjusted correctly unless you plan on fitting a manual boost actuator to fool the electronic ones fitted. Even if you do that you will still not gain much as you are then belimited by the spring pressure on the actuator. A straight through exhaust will help the turbo spool faster which might be the easier option along with making sure the rod is adjusted

Cheers Martin
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#7 (permalink) Old 02-07-2011, 12:01 PM
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So, should I just take the box out of the exhaust and weld a straight pipe instead of the box?
I think tht this is what im looking for, the turbo to spool up quicker, meaning revs increasing quicker etc etc.
Any good shouts of where to get a piece of pipe to replace the box??
Cheers for any replies I get.
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#8 (permalink) Old 02-08-2011, 03:10 AM
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Hi ya, just repalce the box with a piece of pipe, anty decent exhaust place should have the pipe on the shelf and if not look on ebay, there are a couple of exhaust specialists on there that i use

Cheers Martin
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#9 (permalink) Old 02-21-2011, 02:45 PM
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how did you get on mono?
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#10 (permalink) Old 02-27-2011, 05:53 AM
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Quote:
Originally Posted by ozmomotorsport View Post
how did you get on mono?
How much to chip a 112cdi 2002?

..just picked it up, once shes had a service and a few other engine bits are done i could be in for it.

i'd be interested to know the before and after is, bhp, mpg etc.. Cheers
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