[GustavoPR]

Hi guys (sorry for my bad english) im from italy so i dont have methanol and me and my dad just got a 335i with a blown head gasket and we fix it and also changed some parts (stock ones), and our goal is to make something around 400whp, we bought 19T turbos and 76mm downpipes we still need to buy the intake upgrade, charge pipe and bigger intercooler, but we dont know what we should buy to get to our goal safely and have reability, can someone help us? its an 335i e92 n54 engine from 2007

[Navykiller]

Originally Posted by GustavoPR

Hi guys (sorry for my bad english) im from italy so i dont have methanol and me and my dad just got a 335i with a blown head gasket and we fix it and also changed some parts (stock ones), and our goal is to make something around 400whp, we bought 19T turbos and 76mm downpipes we still need to buy the intake upgrade, charge pipe and bigger intercooler, but we dont know what we should buy to get to our goal safely and have reability, can someone help us? its an 335i e92 n54 engine from 2007

Those 19Ts are more than enough. Make sure maintenance is all done, and go JB4 or MHD (or both) and get it tuned. Even with 91 octane youll be there all day.

[lightmanek]

Originally Posted by GustavoPR

Hi guys (sorry for my bad english) im from italy so i dont have methanol and me and my dad just got a 335i with a blown head gasket and we fix it and also changed some parts (stock ones), and our goal is to make something around 400whp, we bought 19T turbos and 76mm downpipes we still need to buy the intake upgrade, charge pipe and bigger intercooler, but we dont know what we should buy to get to our goal safely and have reability, can someone help us? its an 335i e92 n54 engine from 2007

Your power goal should be very easy on the engine, even with stock fueling, but I would throw a Walbro 450 LPFP in the tank if your budget allows.
That is especially important if you want to try Ethanol mixes.

As for the rest, gap spark plugs (ideally upgrade to 1 step colder NGK), decent intercooler and charge pipe should be sufficient to safely hold that power. Optionally for a hot country (summer) upgrading main radiator is a good idea and checking if you have oil radiator. If oil radiator is missing and you want to track the car or do long spirited drivers, then get some 16-25 row unit and install it in factory location for oil radiator.

When you were fixing head gasket, have you cleand intake valves from carbon buildup? That is a fairly important maintenance job on higher mileage cars and easy enough with head off the block or using walnut blasting.

My basic part list:
1. Intercooler - https://fmic.eu/en/intercoolery/1818...i-n54-n55.html - good enough for your power goal and then some
Alternative I'm running - https://fmic.eu/en/intercoolery/1818...54-n55-75.html - this is a monster and a close copy of VRSF Race 7.5'' IC, perfect for large single turbo and 700WHP+ power goals
2. Fuel pump - https://fmic.eu/en/uklad-paliwowy/15...ce-450lph.html
3. Charge pipe- https://fmic.eu/en/intercoolery/1743...i-335i-1m.html - any good will do as long as it's not made from plastic. This one is tested and fits without spending half a day with a file
4. Oil cooler - https://www.ebay.co.uk/itm/165220838...3ABFBMurnH_L1g - or similar unit, plenty of choice available.

Hope this helps.

[PS2N54]

i realize you already bought 19t turbos, but before going through all the effort and labour you should consider a smaller size turbo for 400whp goals. If you're planning to drive within italy with 19t turbos maxing at 400whp, the car will feel very slow unless you're at 5500rpm+ and only want to feel power on a long straight road.

consider a 14t or 15t setup for 400whp goals if you can get rid of your 19ts before you use them... it will be a way better driving experience for where you live (unless drag/straights is all you want the car for)

[NoGuru]

Originally Posted by lightmanek

Your power goal should be very easy on the engine, even with stock fueling, but I would throw a Walbro 450 LPFP in the tank if your budget allows.
That is especially important if you want to try Ethanol mixes.

As for the rest, gap spark plugs (ideally upgrade to 1 step colder NGK), decent intercooler and charge pipe should be sufficient to safely hold that power. Optionally for a hot country (summer) upgrading main radiator is a good idea and checking if you have oil radiator. If oil radiator is missing and you want to track the car or do long spirited drivers, then get some 16-25 row unit and install it in factory location for oil radiator.

When you were fixing head gasket, have you cleand intake valves from carbon buildup? That is a fairly important maintenance job on higher mileage cars and easy enough with head off the block or using walnut blasting.

My basic part list:
1. Intercooler - https://fmic.eu/en/intercoolery/1818...i-n54-n55.html - good enough for your power goal and then some
Alternative I'm running - https://fmic.eu/en/intercoolery/1818...54-n55-75.html - this is a monster and a close copy of VRSF Race 7.5'' IC, perfect for large single turbo and 700WHP+ power goals
2. Fuel pump - https://fmic.eu/en/uklad-paliwowy/15...ce-450lph.html
3. Charge pipe- https://fmic.eu/en/intercoolery/1743...i-335i-1m.html - any good will do as long as it's not made from plastic. This one is tested and fits without spending half a day with a file
4. Oil cooler - https://www.ebay.co.uk/itm/165220838...3ABFBMurnH_L1g - or similar unit, plenty of choice available.

Hope this helps.

Nailed it. I would follow lightmanek's instructions!

Originally Posted by nzero

i realize you already bought 19t turbos, but before going through all the effort and labour you should consider a smaller size turbo for 400whp goals. If you're planning to drive within italy with 19t turbos maxing at 400whp, the car will feel very slow unless you're at 5500rpm+ and only want to feel power on a long straight road.

consider a 14t or 15t setup for 400whp goals if you can get rid of your 19ts before you use them... it will be a way better driving experience for where you live (unless drag/straights is all you want the car for)

While yes, the 19T's will give enough power to get to 650whp, they will spool sooner then 5500rpm. Mine come on at 2800 and I am just over 600whp.
They are just fine for daily driving.

[iqraceworks]

Originally Posted by GustavoPR

Hi guys (sorry for my bad english) im from italy so i dont have methanol and me and my dad just got a 335i with a blown head gasket and we fix it and also changed some parts (stock ones), and our goal is to make something around 400whp, we bought 19T turbos and 76mm downpipes we still need to buy the intake upgrade, charge pipe and bigger intercooler, but we dont know what we should buy to get to our goal safely and have reability, can someone help us? its an 335i e92 n54 engine from 2007

If it was me, I would try to return or tell those junky ebay 19t's and get your money back.......there is a very good chance they are going to give you headaches in the future. Honestly, for your goals...stock turbos is all you need.

You can get a set of RB Twos' for $2k, do your your standard bolt-ons (DCI, DPs, FMIC, stage 2LPFP), get a custom tune, and make 500hp pretty easy on pump gas...550+ on an E40 tune. Or just get a brand new set of Mitsubishi turbos with a lifetime warranty from FCP Euro, and use an MHD tune to get 400 hp nice and easy.

19t's are not what you want...for many reasons. Research the ebay 17 and 19t turbos....you will quickly see how much trouble people have with them.

....just my opinion

[PS2N54]

iqraceworks makes good point using stock turbos with fcp warranty, they will do 400whp easy and you will feel the power on smaller roads there. even a quality chra+wastegate replacement kit if you want to do it under a budget will serve you better than the 19ts for 400whp setup.

19t @ 600whp setup is fine cuz by 3.5k rpm you're already at around 200-250hp, for a 19t @ 400whp setup at 3.5k rpm that car going to be at 120-150hp feeling sluggish on smaller roads.

[ab987]

19Ts nor stock turbos will be good for 400whp. As stated above the 19Ts will take way too long to spool, and on 91 or 93 with stock turbos you will simply not be able to reliably make that power. Even 380whp is difficult on them, 400whp would just about be a kill tune without meth.

Get some good stage 1 turbos, RB1s will do 420-430whp no problem and feel the best of the bunch. RB2s will be too big, and OEM billets may be too small. The turbos and your engine will be super happy at that power level.

[iqraceworks]

Originally Posted by ab987

19Ts nor stock turbos will be good for 400whp. As stated above the 19Ts will take way too long to spool, and on 91 or 93 with stock turbos you will simply not be able to reliably make that power. Even 380whp is difficult on them, 400whp would just about be a kill tune without meth.

Get some good stage 1 turbos, RB1s will do 420-430whp no problem and feel the best of the bunch. RB2s will be too big, and OEM billets may be too small. The turbos and your engine will be super happy at that power level.

RB TWO's will be "too big"? Hardly. Too big for what?

They have quick response just like stock turbos, and will easily make 450hp on 93 with 20psi boost. The are pretty much the perfect size for these cars if you want to stay with the OEM HPFP and not step up to a port injection setup.

Can you please expand on how they are "too big"?

[ab987]

Originally Posted by iqraceworks

RB TWO's will be "too big"? Hardly. Too big for what?

They have quick response just like stock turbos, and will easily make 450hp on 93 with 20psi boost. The are pretty much the perfect size for these cars if you want to stay with the OEM HPFP and not step up to a port injection setup.

Can you please expand on how they are "too big"?

Don't kid yourself, RB2s do not respond like decently healthy stock turbos lol. It would make sense if you came from worn out stockers, but having had 2 brand new sets myself, stockers are ridiculously responsive compared to these.

RB2s are amazing for what they are, but even at 3k it's about a second of lag with absolutely all load shock and accelerator pedal damping disabled, stockers would be more in the neighborhood of 400ms. For me it's just enough to get mildly irritating around town. On a highway they are fantastic. I can't recommend these enough, but for somebody that really doesn't need the legs of the RB2 and wants low 400s, there's a reason Rob makes the Ones. They'd be perfect for OP's goals.

Don't take it from me though, reach out to Rob and he'll tell you the same

[iqraceworks]

Not that I want to get into an argument.....but in my experience (I've been running RB TWO's for a year now).....you are wrong. And from all the reviews I've ever read online from guys who have them.....you are wrong.

I had a set of stock turbos that were still making good boost, and replaced them with a set of RB TWO's. According to the multiple logs I've ran with both stock and RB TWO's......the time from full open throttle to the time they hit boost targets is the same (or better) than stock turbos. Response is instant.....not sure where you are getting "at 3k rpm there is still 1 second of lag". Absolutely false. Maybe you had a bad tune, or had some other issues going on with your car....not sure, but there is no lag what so ever.

And it's not just me saying it.....Rob will tell you the same thing.... response is the same or faster than stock turbos. If I remember right....they are actually around the 15t size..... definitely not laggy.

Saying RB TWO's are too big and are laggy........is just not true. The logs don't lie.

[ab987]

My logs show exactly what I said above. Stock turbos would hit 17psi in 400-500ms, and Twos take more like 900ms-1s. You can't beat physics, a less restrictive hot side and more mass, it's gonna take marginally more time to hit your target.

And just because a set of turbos is hitting target does not mean they are healthy and spooling as fast as they should. My 84k mile turbos certainly felt slower than my RB2s and they hit target. My new sets however, they felt noticeably quicker than the RB2s. The lag isn't bad, but you can't tell me it's not there.

They are not too big for my goals, but for OP's maybe a little bit. Again, OP should talk to Rob and get recommendations from Rob himself. If his long term goals are above 450-500whp, then Twos are the move. Otherwise... Rob makes the Ones for a reason. You can't go wrong with either choice, but calling the Twos better for these goals simply isn't true

[iqraceworks]

If you had laggy feeling RB TWO's.....I'd be curious who your custom tuner was. People who run RB TWO's (all except you) all say they respond super fast.

A bad tune can make any turbos respond slow. Who did yours? Or were you running an MHD canned tune?

If I remember right...you also had a bunch of posts on here about throttle delay issues with MHD. It sounds to me like you've got some other issues going on with your car.

Also...if you're gone through three sets of stock turbos, how long ago was it that you had the RB Two's on your car?? Or is all of your info second hand when it comes to the RB Two's?

[Navykiller]

Originally Posted by iqraceworks

Not that I want to get into an argument.....but in my experience (I've been running RB TWO's for a year now).....you are wrong. And from all the reviews I've ever read online from guys who have them.....you are wrong.

I had a set of stock turbos that were still making good boost, and replaced them with a set of RB TWO's. According to the multiple logs I've ran with both stock and RB TWO's......the time from full open throttle to the time they hit boost targets is the same (or better) than stock turbos. Response is instant.....not sure where you are getting "at 3k rpm there is still 1 second of lag". Absolutely false. Maybe you had a bad tune, or had some other issues going on with your car....not sure, but there is no lag what so ever.

And it's not just me saying it.....Rob will tell you the same thing.... response is the same or faster than stock turbos. If I remember right....they are actually around the 15t size..... definitely not laggy.

Saying RB TWO's are too big and are laggy........is just not true. The logs don't lie.

iq,
I finally got my RB2+ in. You are absolutely correct. These things spool just as fast as stock, but much harder. I dont even have my meth system running correctly with these td03 17ts, and they are a bit faster than stockers with meth (both OTS tunes). Maybe that other guy thinks that any upgraded turbos are equivalent to 68mm trim turbos idk.
Now I also have the benefit of not falling on its face past 6k rpms.

[ab987]

Originally Posted by iqraceworks

If you had laggy feeling RB TWO's.....I'd be curious who your custom tuner was. People who run RB TWO's (all except you) all say they respond super fast.

A bad tune can make any turbos respond slow. Who did yours? Or were you running an MHD canned tune?

If I remember right...you also had a bunch of posts on here about throttle delay issues with MHD. It sounds to me like you've got some other issues going on with your car.

Also...if you're gone through three sets of stock turbos, how long ago was it that you had the RB Two's on your car?? Or is all of your info second hand when it comes to the RB Two's?

I've had the car for 4 years, last 2 years were both different sets of new stock turbos because the tune was aggressive and MHI QC seemed to fly out the window during COVID. My RB2s have been in the car for 6 months, tuned by Ken@Wedge. WGDC immediately goes to 100 when I floor it as it should, and settles in around 40-45 to redline at 20psi. It's not the tune.

I never said they were slow to respond, 1 second from coasting to full boost is not slow. Again if you compare them to worn out old factory turbos they will feel super quick, but as I was used to essentially brand new factory turbos for 2 years at city speeds (35mph) I did notice the lag when I fitted them. When you are up in the rev range (>4000) the lag fades away and they feel like stock turbos again.

The throttle response "issue" is just the load damping routines, if you disabled them too you'd be amazed at the difference and how responsive the NA throttle is. My theory is back in 2011 when they pushed the "wastegate rattle software fix" they ramped all of that up. Without these routines it feels as responsive as the M3, there are no hardware issues here. Solenoids, canisters, you name it, I've probably replaced it.

[Saif2018]

Just to add, there will be some lag on any turbos bigger than the stock ones,
14t/15t/17t/19t etc

it's always a compromise, stock turbos get on boost faster but fall on their face flat past 5k,

RB 1/2 will have a little bit more lag than stock ones but will hold boost to redline.