Quote:
Originally Posted by johnung
Quote:
Originally Posted by Filip3615
Hi, I have a 435i with FBO's including Quaiffe LSD.
I'm interested in upgrading to stronger turbo's and wonder exactly what modifications need to be done except for the turbo's, possibly HPFP and a new map.
Also, what turbo's do you recommend? I want to be able to reach somewhere around 500-550Whp.
If there are likewise forums, please link those as I did not find one for this type of question.
Thanks in advance!
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If you are hoping to achieve 550bhp on an N55 EWG, then there are other components to upgrade too. Assuming that you are upgrading the turbo and already have an adequate free flow catted or catless downpipe and an aluminum charge pipe, below is what I'd consider in no particular order. I've been assembling these parts so I included links.
You are getting lots of opinions on turbo upgrades. I would make sure to include Pure Turbos in your list to consider.
1) TMAP 3.5 bar upgrade.
VDO version is $65 at FCP Euro
Also make sure that you have a free flow air filter such as drop-ins from aFe or K&N. About $85
2) Turbosmart BOV
Louder Dual Port version or quieter Plumb Back model, your choice.
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
3) Upgraded Turbo Inlet Pipe
Get the MST v2/hybrid version. There is a thread where they were tested a MST was the winner.
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
4) Upgraded Turbo to Intercooler Pipe (TIC)
With age the stock plastic TIC pipe can become thin and flexible. Add higher boost pressures and it tends to balloon like a rubber brake hose.
Evolution Racewerks and FTP make the highest quality. Make sure to replace old o-rings. O-rings on intercooler connections are directional and will leak if installed backwards.
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
5) Upgraded Intercooler
Whatever FMIC you have installed is unlikely to be adequate if you achieve 550bhp. I recommend the Wagner Competition EVO2. Replace the o-rings as stated above.
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
6) HPFP
I recommend the Dorch Stage2
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
7) LPFP
The stock LPFP maxes out at roughly 460hp. There are different levels. For your goals, I recommend at least the Precision Raceworks Stage 2.5 model.
https://www.kiesmotorsports.com/prod...2811605?aff=22
8) Ethanol sensor with Canbus interface.
I recommend the Zeitronix along with the Precision Racewerks fuel line upgrade.
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
9) Engine tune that can handle E85, either a custom tune or the BootMod3 Stage2 Flex Fuel tune.
https://www.kiesmotorsports.com/prod...8;_ss=r?aff=22
Of course, if you beef a car up with this much power, make sure to upgrade brakes, suspension and tires. Haha, I have plenty of opinions on those as well. Good luck!
Hope this helps! |
Thanks for the very elaborate guide through all the parts necessary!
I've tried reading multiple threads and often Its said "get FBO's, new turbo and new Hpfp".
I'm thankful that you explained just what needs changing, in terms of reliability and making sure all components are able to handle the upgraded power.
Just contemplating whether an M4 is more worth at the moment.
Sure it might be a bit more expensive than those components, but they all need to be changed which includes a Labour cost. And also an m4 gets me better brakes, suspension, etc..? Possibly worse exhaust sound.
I'll have to do some thinking, from a wallet perspective as well. Sweden is approx. 50% more expensive than the US so that's also something to take into consideration..
Anyhow, this wont be done till summer is over, so..