[lixiang7349]

A tuner tells me I'll have to go from cts catted downpipe to catless in order to use pure800. Is that statement correct? Looking for 600 whp.

Current setup: TU pump, 200 cel catted downpipe, new champion plug at .022, kn filter, E30. Stg2+ map. Been told it puts down estimated 450 whp.
2019 M240i xDrive 7.5k miles

[kriszty]

i think yes, i have the same setup and have planned for about 2-3 weeks also upgrading to pure 800. i already have a wagner 200 cell downpipe.. it helps spooling quicker the turbo....

it should get at least 500whp with regular fuel, not planning to upgrade to Ethanol or wmi.

[Devil doc]

Originally Posted by lixiang7349

A tuner tells me I'll have to go from cts catted downpipe to catless in order to use pure800. Is that statement correct? Looking for 600 whp.

Current setup: TU pump, catted downpipe, new champion plug at .022, kn filter, E30. Stg2+ map. Been told it puts down estimated 450 whp.
2019 M240i xDrive 7.5k miles

You will definitely need a bigger hpfp than a TU pump to get anywhere near 600 awhp, specially if you’re planning to blend ethanol.

You might be able to get away with it if you’re running high octane fuel, a lot of meth, or both. However; I doubt a TU pump can supply enough fuel for your power goal before it crashes. Those pure800s will demand lots of volume unless you run them at low boost levels

[kriszty]

Originally Posted by Devil doc

You will definitely need a bigger hpfp than a TU pump to get anywhere near 600 awhp, specially if you’re planning to blend ethanol.

You might be able to get away with it if you’re running high octane fuel or a lot of meth, but I doubt a tu pump can cope with the required fuel volume for your power goals before it crashes. Those pure800s will demand lots of volume unless you run them at low boost levels

yes also you need a bigger fuel pump ( Dorch stage 1 ) or simular

[Devil doc]

Originally Posted by kriszty

yes also you need a bigger fuel pump ( Dorch stage 1 ) or simular

For sure, if I’m buying a dorch...I’m absolutely buying the stage 2 from the get go.

The TU and the dorch stage 1 aren't that far apart in terms of flow, I think it’s only a 10% difference; Personally, I’d buy the big one. it’s probably more cost effective to get the larger pump from the beginning, rather than getting the stage 1 and then having to buy the stage 2 at a later time, also having that extra reserve flow is a nice.

[Devil doc]

Originally Posted by kriszty

i think yes, i have the same setup and have planned for about 2-3 weeks also upgrading to pure 800. i already have a wagner 200 cell downpipe.. it helps spooling quicker the turbo....

it should get at least 500whp with regular fuel, not planning to upgrade to Ethanol or wmi.

If you’re targeting 500 whp and you aren’t blending fuels, then a TU might just be enough for your goal.

Have you draggy your current stage 2+ set up? I’m wondering what people are getting with their b58 2 series vs the regular stage 2. There’s not much info out there.

[kriszty]

From what Peter said ( from Pure turbo ) the Dorch stage 1 fuel pump is needed , i,m planning only to use regular gas , so 500whp should be enough for me..

i did have a dragy, and my 100-200km time was 8.7 sec ( around 440hp ) with the new pure turbo 800 i think 6.9 or a low 7 sec is possible, Peter said that a higher octan gas helps getting more ps out of the pure 800

Here in holland we only have octan 98 ( i think the same like yours 93 in usa )
i do not plan to use octane booster, but hopely after the Covid crisis i can drive again to Germany where i can use 102 octan fuel...

[lixiang7349]

Can I get 550 with catted and pure800? 92 pump gas.

[kriszty]

Originally Posted by lixiang7349

Can I get 550 with catted and pure800? 92 pump gas.

I think the OEM downpipe will restrict your turbo to much.. at least you need the dorch stage 1 , and a catless or 200/100 cell catted downpipe. All depends on the fuel you use.. but 500whp (around 550ps) is possible.

my setup is, wagner 200 cell downpipe, midpipe removed, Remus exhaust .. also will get newer brakes and lighter wheels ( breyton )

what is your 100-200 time , cause i think 450whp with your default turbo and oem downpipe seems me to much , i only got 440hp ( 400whp)

[lixiang7349]

Originally Posted by kriszty

I think the OEM downpipe will restrict your turbo to much.. at least you need the dorch stage 1 , and a catless or 200/100 cell catted downpipe. All depends on the fuel you use.. but 500whp (around 550ps) is possible.

my setup is, wagner 200 cell downpipe, midpipe removed, Remus exhaust .. also will get newer brakes and lighter wheels ( breyton )

what is your 100-200 time , cause i think 450whp with your default turbo and oem downpipe seems me to much , i only got 440hp ( 400whp)

Mine is 200 cel

[kriszty]

Originally Posted by lixiang7349

Mine is 200 cel

mine too should be ok ,, the fuel pump upgraded is recommended for the pure turbo 800..

with 440ps i,m getting a 8.7 sec from 100-200 with 550ps i hope to get high 6 low 7

[lixiang7349]

Originally Posted by kriszty

mine too should be ok ,, the fuel pump upgraded is recommended for the pure turbo 800..

with 440ps i,m getting a 8.7 sec from 100-200 with 550ps i hope to get high 6 low 7

I got tu pump because that's what pure recommended for pump gas.

[kriszty]

Originally Posted by lixiang7349

I got tu pump because that's what pure recommended for pump gas.

the TU is already the upgraded fuel pump ? , if yes then you are ready for it

[lixiang7349]

My original question was does it make sense to pair 200 cel cat with pure800?

[jv92red]

Originally Posted by lixiang7349

I got tu pump because that's what pure recommended for pump gas.

Yes but did they know you are running E30? Your original post mentions you are running E30. The purpose of running an E30 blend is to get your effective octane up to around 95. Regular unleaded pump gas with 95 octane in it is not the same apples to apples for fuel requirements just because the octane is the same. With the Ethonol mix you are running a lower stoichiometric A/F (air fuel ratio) compared to 95 octane unleaded fuel so to compensate you need to pump more fuel.

This is the reason why the tuner mentioned a TU pump would be fine with a bigger turbo since you didn't mention E30. If you mention running E30 to a tuner with a bigger turbo and just a TU pump then they'll tell you no. Even the stock turbo has shown to run out of fuel with the TU pump running higher than E30 blends.

Bigger turbo on TU pump and pump gas or higher than E30 on stock turbo and TU pump you should really be checking fuel trims anyways to make sure you're not running out of fuel.

Catted or non catted question is less about safety with a bigger turbo and more about HP left on the table. If you are ok with a little bit more noise and stink and pollution for the incremental HP gain from flow then go catless. If the incremental gain is not worth the smell or noise or pollution then stay catted.

[Rick.Null]

Originally Posted by lixiang7349

My original question was does it make sense to pair 200 cel cat with pure800?

I feel like your original question is unanswered at worst and "don't really know but yea" at best. Hoping you get an answer because I am curious as well.

[Devil doc]

Originally Posted by Rick.Null

I feel like your original question is unanswered at worst and "don't really know but yea" at best. Hoping you get an answer because I am curious as well.

I wouldn’t wouldn’t run a catted downpipe for a 600whp goal, that doesn’t mean you can’t try it. Do keep in mind that Unless you get a HIGH end catted downpipe, you aren’t going to pass emissions anyways, and that’s the biggest reason people run them in the first place.

Besides the added restrictions on flow, the power you’ll leave on the table, and the higher EGTs, the catalytic cells found in most of the cheaper aftermarket downpipes eventually clog or melt at some point, so unless you’re planning to pay big bucks for a proper catted downpipe and stay a little more conservative with your power goals, I personally wouldn’t get one.

It does makes sense why he would recommend a bypassing the catalytics all together, that is if you’re trying to make 600 whp.

[mike@x-ph.com]

Originally Posted by lixiang7349

My original question was does it make sense to pair 200 cel cat with pure800?

you can pair any downpipe with pure800, even the stock one. You will be losing power because of the added restriction.

For a specific power target, you need to take to a tuner if they can make the needed power with the catted downpipe. It looks like your tuner said that he cannot do so safely

[Rick.Null]

Originally Posted by Devil doc

I wouldn't wouldn't run a catted downpipe for a 600whp goal, that doesn't mean you can't try it. Do keep in mind that Unless you get a HIGH end catted downpipe, you aren't going to pass emissions anyways, and that's the biggest reason people run them in the first place.

Besides the added restrictions on flow, the power you'll leave on the table, and the higher EGTs, the catalytic cells found in most of the cheaper aftermarket downpipes eventually clog or melt at some point, so unless you're planning to pay big bucks for a proper catted downpipe and stay a little more conservative with your power goals, I personally wouldn't get one.

It does makes sense why he would recommend a bypassing the catalytics all together, that is if you're trying to make 600 whp.

But the smell!!! Especially in a convertible!

Ah but you are absolutely correct

[luchocamp]

Originally Posted by lixiang7349

My original question was does it make sense to pair 200 cel cat with pure800?

yes

[kriszty]

Originally Posted by luchocamp

yes

i,m also planning to upgrade to pure turbo 800, and have also a 200 cell wagner downpipe. it should be no problem with 530whp maximum

[lixiang7349]

Originally Posted by kriszty

i,m also planning to upgrade to pure turbo 800, and have also a 200 cell wagner downpipe. it should be no problem with 530whp maximum

I would hope I can get 550 with cat. Where did you get 530?