Midnight Koop

kleemann does not come with tune.... so you offer more, but i guess what would be nice to see is a side by side comparison of gains over stock... there is a dyno posted in the m271 kleemann headers thread of before and after. you should post one too to show others how your output compares. goodluck!

amanonfire

Lets hope so. I bought a "prototype" header with questionable welds... and the welds burnt through.

amanonfire

Not much, since even with a tune the gains weren't much more than Kleemann, and for those of us with annual smog/emissions testing would have to swap the header out while the Kleemann one is "legal".

Twenty4Play

Has anyone bought and tried this header+tune combo yet?

Lexani1217

I am wondering to get this LET package mentioned above here. ($800)

or to get a
header, downpipe with integrated high-flow catalyst, new factory exhaust manifold gasket, and all necessary fasteners/hardware. ($650) Followed up the kit includes a larger crank pulley, smaller water pump pulley, K&N air filter, and ECU programming. ($1300)

What is ya'll input on which one to get?

shivi1345

^ So $1300 total?......ur gonna pay $500 more for pulleys and stuff........the Pulley kit that they make for the M271 costs like $600 if you can find one.......so sounds good

if ur gonna pay $650 and then another $1300 I'd say HELL NO lol


Do you know if this is being produced yet? and where are you getting your "kit" from?

Lexani1217

actually it is 650 and then another 1300 for them LOL.

and i was speaking to Corey from Kleemann about it.

i sorta understand this LET thing, but I am thinking to get the Kleeman headers. then to get LET crank pulley & ECU flash from them

TemjinX2

get the pulley and tune first. You'll notice more of difference from the extra boost then headers.

Twenty4Play

Last I checked, no one is doing pulleys and ECU tunes for the M271. At least not anymore, because they were too problematic.

Lexani1217

i was talking to Corey from Kleemann, and he told me if there are any problems I can get credit back for them. He told me that there were a lot of problems with the M111 engine, but he rarely had an issue with the m271. whoever wants me too, i can forward you my e-mails to you about what we have talked about.

armand71067

I am new to this blog but I am interested in getting a header for my C230, I have done the following upgrades and they are creating to much pressure at the exhaust manifold, it wont empty out quick enough (to much back pressure). i will also like to find out a way to control the supercharge integrated boost pressure releif valve.

K&N air filter
Custom made oversize crank pulley
Custom made undersize supercharge pulley
ECU performane programming - not to happy with it.
Replace both air intakes with custom made 3" aluminum pipes

gain 58 HP per the dyno test

if somebody can advice I will appreciate!!