BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

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      03-08-2012, 06:07 PM   #1
andrey_gta
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2008 BMW 128i  [10.00]
Can one modify 1m Exhaust for 128i n52?

It seems that it would take some welding and such.
But could it be the same modification as a 135i exhaust on 128i??

Anyone wants to do this?
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      03-08-2012, 08:43 PM   #2
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i don't think its possible because the battery location tray and something else is in a different location. On the 135i and 128i its in the center, where the exhaust would be on the 1M. On the 1M, it has been reallocated to the right side of the car I think. The best option if you wanted to go quad would be a remus exhaust.

Also, the 1M is turbo. I think turbo exhausts work different then NA ones.
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      03-09-2012, 06:17 AM   #3
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This is how cars end up on Jalopnik with people laughing and pointing.
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      03-09-2012, 08:17 AM   #4
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Quote:
Originally Posted by Bimmer-Bob View Post
This is how cars end up on Jalopnik with people laughing and pointing.
lol I am not trying to make 128i an M car.... which reminds me got to cancel my order of ///M badges

But at least now I know that the battery box is in the way. Thx
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is
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      03-09-2012, 08:48 AM   #5
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Just buy a BMW Performance Exhaust for your 128i. 30-minute instalation, no welding required. Sounds great, no dealer hassles.
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      03-10-2012, 02:29 AM   #6
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Quote:
Originally Posted by roundel335 View Post
Just buy a BMW Performance Exhaust for your 128i. 30-minute instalation, no welding required. Sounds great, no dealer hassles.
i have to keep saying this.. but then it's just an axel back with NO performance increase, it's just sound

i mean, people keep calling exhausts like the 'laptorr' expensive at 2-2.5k.. but it's a full cat delete header-back exhaust ffs, it's twice the price and you actually gain power! even just the BMWP muffler is almost $1k. a decent german exhaust is 3-4k.
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      03-10-2012, 08:49 AM   #7
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Flinchy - you're not going to get any kind of significant power increase with a cat-back exhaust on your 128i. Cat-back or axle-back, the most you'll see is 4-5 hp at very high rpm. If you want a power increase you can feel, get a set of power pulleys installed - you will definitely feel that, and an axle-back exhaust will add to the fun.

As for cost, I bought my BMW PE for the 128 for around $700. And again, this is a BMW part that you won't get any hassles about. If you remove your catalyst and entire exhaust system, you may get flak from the dealer and you will also be tampering with federally-mandated pollution control equipment. If you really want a lot of power, trade your 128 in on a 135. You can put everything available on a 128i (short of a supercharger kit) and you still won't approach the same power level - not by a long shot. I had a 330i ZHP that I added an intake, exhaust, power pulleys, a larger throttle body and Dinan's S3 software for that engine, and I still didn't come close to 300 hp. The ZHP engine had 235HP stock, with higher-performance camshafts, and there just wasn't much more you could get out of it - maybe 20hp with everything mentioned here.
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      03-10-2012, 12:41 PM   #8
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I paid less than $700 for my Performance exhaust and did the install myself. I just can't see spending $2k-$3k on an exhaust for something that wasn't a dedicated race car, particularly since doing so might result in a non-street legal car (and since performance wouldn't be increased by much more anyway).

Modding can be great fun, but you definitely can reach a point of diminishing returns. IMO a $2500 exhaust for a $30k 128i is beyond that point.
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