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2Addicts | BMW 2-Series forum Technical Topics B58 (M240i) Engine, Transmission, Exhaust, Tuning Is catless required for pure800?

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      03-19-2021, 01:27 PM   #45
kriszty
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Nothing wrong with the cat , just for sure i,m replacing it together with the pure turbo install next week.
But i want to know how the cat is looking now after 10000km , to give everyone an idea about the quality ( or not )
picture from my wagner Downpipe 200 cell after 10k
Wagner Downpipe still looks very good in my opinion..
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      03-23-2021, 02:11 PM   #46
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this was my dyno... setup was made with 98 gas only
Pure turbo 800, dorch stage 1 , catless downpipe. i got 519 whp .

but i will bring my car to a local tuner who is willing to fine tune my car for a better result and better timing adjust.

Timing seems a bit off and low i think ! needs more octane ( but for sure i,m using good 98 gas )

https://www.bootmod3.net/log?id=6040...729b5994d9e43f

in real driving the car is driving in my opinion very good...

Last edited by kriszty; 03-23-2021 at 02:19 PM..
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      03-23-2021, 07:50 PM   #47
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Quote:
Originally Posted by kriszty View Post
this was my dyno... setup was made with 98 gas only
Pure turbo 800, dorch stage 1 , catless downpipe. i got 519 whp .

but i will bring my car to a local tuner who is willing to fine tune my car for a better result and better timing adjust.

Timing seems a bit off and low i think ! needs more octane ( but for sure i,m using good 98 gas )

https://www.bootmod3.net/log?id=6040...729b5994d9e43f

in real driving the car is driving in my opinion very good...
I've seen people getting 550+ with your exact setup. I wonder what the differences are.
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      03-24-2021, 03:12 AM   #48
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Originally Posted by lixiang7349 View Post
I've seen people getting 550+ with your exact setup. I wonder what the differences are.
yes me too....

after next week they will check everything... so i have to wait now
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      04-06-2021, 08:10 AM   #49
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Originally Posted by lixiang7349 View Post
I've seen people getting 550+ with your exact setup. I wonder what the differences are.
Different gasoline made some big difference now ( octan 100), i got now 576hp on the superflow Dyno ( this is around 600hp on dynojet )
timings seems to be very good, almost no corrections .
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      04-06-2021, 08:21 AM   #50
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Quote:
Originally Posted by kriszty View Post
Quote:
Originally Posted by lixiang7349 View Post
I've seen people getting 550+ with your exact setup. I wonder what the differences are.
Different gasoline made some big difference now ( octan 100), i got now 576hp on the superflow Dyno ( this is around 600hp on dynojet )
timings seems to be very good, almost no corrections .
100? New Custom tune?
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      04-06-2021, 08:26 AM   #51
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100? New Custom tune?
yes, new map , much better timing and more hp , extremly happy with the result. i also think the higher octan fuel makes a big difference.
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      04-08-2021, 01:45 AM   #52
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yes, new map , much better timing and more hp , extremly happy with the result. i also think the higher octan fuel makes a big difference.
https://www.bootmod3.net/log?id=606d...0b436266cce97d
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      04-30-2021, 01:49 PM   #53
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So... to clarify, you "might" be okay with a catted dp and pure800? Everyone in here is talking about 200 cell. My active autowerke dp I believe is a 400cell. But it just depends on power goals and what the tuner is comfortable with?

I already have an AA catted dp and wanna upgrade to pure800 but here in California, cops have been brutal toward catless cars so I'm wondering if I can get away running the AA catted. Goal would be about 600whp. I already have TU pump but will probably upgrade to dorch stage 2 to meet the goal on e50. If it's absolutely needed and recommended I'd be open to sell it and switch to catless but I would rather not receive any more police attention if it's unnecessary. Thanks!
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      05-04-2021, 01:22 PM   #54
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Quote:
Originally Posted by kianf22 View Post
So... to clarify, you "might" be okay with a catted dp and pure800? Everyone in here is talking about 200 cell. My active autowerke dp I believe is a 400cell. But it just depends on power goals and what the tuner is comfortable with?

I already have an AA catted dp and wanna upgrade to pure800 but here in California, cops have been brutal toward catless cars so I'm wondering if I can get away running the AA catted. Goal would be about 600whp. I already have TU pump but will probably upgrade to dorch stage 2 to meet the goal on e50. If it's absolutely needed and recommended I'd be open to sell it and switch to catless but I would rather not receive any more police attention if it's unnecessary. Thanks!
not sure, but i think 600whp would put a lot of strain on your 400 cell downpipe ( maybe i,m wrong )
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