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BMW X1 (F48) and X2 (F39) Forums General BMW X1 Forum (F48) Anyone with a 1.5L s18i who has done exhaust mods?

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      05-23-2020, 04:24 PM   #1
SDriver18i
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Anyone with a 1.5L s18i who has done exhaust mods?

I'm looking for anyone here with 1.5L sdrive18i who has done any exhaust mod to get better sounds. Straight pipe, muffler delete, resonator delete, anything. Sound clips would be nice too.

I got a stage 1 tune which makes a massive difference compared to those stupid low powered racechips. Just looking to see what else I can do to this small 3 cylinder engine car and if its worth the hassle.

Thanks.
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      05-25-2020, 04:10 AM   #2
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How many HP did you gain with the stage 1?
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      05-25-2020, 06:26 AM   #3
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Quote:
Originally Posted by Fuzzzy View Post
How many HP did you gain with the stage 1?
Average was at 172 and maxed out at 174 on third dyno run. It was a genetic and not custom map.

I recommend people use #TrueTune from the UK, since they send you the device to download your car's software and they customize it! You'd probably get a few more HP's and torque from a custom map compared to a generic map, but who knows!

It feels like the base X3 20i with 180 something HP. Without the dyno, if you had told me it was 200HP, I'd believe you because the difference is massive. One downside, since its only a 1.5L, I tend to mash on it quite a bit and the fuel goes down a little bit quicker than regular sports mode.
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