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BMW 5-Series (G30) Forum 2017+ BMW 5 Series (G30) General Discussions Downpipe + Piggyback question

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      02-25-2025, 08:24 PM   #1
nnoori
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Downpipe + Piggyback question

Hey guys, I posted about a month ago about my RC GTS Black. While I am pleased with its performance, I kind of regret not getting jb4 because I realized I do want more power, getting a jb4 would allow me to utilize the downpipe more. RC is great for what it is, great install, great gains on stock internals. But, I want more power now. Is it worth getting a downpipe with just my racechip, will I see some gains? Or, should I just upgrade to MGF or BM3 before purchasing a downpipe? Also, will it make that much of a difference in terms of sound, or should I opt for a high performance muffler instead considering that I am a 4cyl?
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      02-25-2025, 08:30 PM   #2
co_pa
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Quote:
Originally Posted by nnoori View Post
Hey guys, I posted about a month ago about my RC GTS Black. While I am pleased with its performance, I kind of regret not getting jb4 because I realized I do want more power, getting a jb4 would allow me to utilize the downpipe more. RC is great for what it is, great install, great gains on stock internals. But, I want more power now. Is it worth getting a downpipe with just my racechip, will I see some gains? Or, should I just upgrade to MGF or BM3 before purchasing a downpipe? Also, will it make that much of a difference in terms of sound, or should I opt for a high performance muffler instead considering that I am a 4cyl?
You should go BM3 or MHD to get the most out of the tune and downpipe. You will be able to code out the CEL, too, vs a piggyback. Personally, I have done the tune and downpipes at the same time. Muffler is your call if you want the sound, it won't add power.
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      02-25-2025, 11:47 PM   #3
BWilson263
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I would sell the RC GTS Black and buy BootMod3 or MHD. Once you start you'll always want more power. Bootmod3 or MHD will allow you to grow. I would start with Stage 1 first. While adding a downpipe will give you more speed but, there will be some fuel fumes if you go with a catless downpipe. There's a bigger jump from stock to Stage 1, than going from Stage 1 to Stage 2 in my opinion.
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      03-18-2025, 04:57 PM   #4
nnoori
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Originally Posted by BWilson263 View Post
I would sell the RC GTS Black and buy BootMod3 or MHD. Once you start you'll always want more power. Bootmod3 or MHD will allow you to grow. I would start with Stage 1 first. While adding a downpipe will give you more speed but, there will be some fuel fumes if you go with a catless downpipe. There's a bigger jump from stock to Stage 1, than going from Stage 1 to Stage 2 in my opinion.

Thanks for the advice. To be honest, probably will do that asap once I get a downpipe.
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      03-18-2025, 04:58 PM   #5
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Quote:
Originally Posted by co_pa View Post
You should go BM3 or MHD to get the most out of the tune and downpipe. You will be able to code out the CEL, too, vs a piggyback. Personally, I have done the tune and downpipes at the same time. Muffler is your call if you want the sound, it won't add power.
Thank you for the advice, definitely will get a real tune once I get downpipe.
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