What is the limit of the N54 engine?

KinoBoom · 07-05-2011, 07:52 PM

How much can you do to the engine before you reached too far or the limit?
1- In terms of HP gain, what is the most you can go before you have to modify the engine internally
2- In terms of Boost gain, same as above
3- When you go larger turbos, what does the work entail? (From mapping to custom software maybe or is there currently a map that works with larger turbos?)
4- Who makes internal parts that are stronger and better than stock for this engine? (who is super reliable?)
5- Who makes larger Turbos for this engine?

Sorry for all these questions, I am trying to figure out which route i am going to take on this car; if keeping it long term it will mean a lot more than just a cobb tune and an exhaust for me, i will have to go hard core with larger turbos, custom tune, internal engine work...

Any input is very helpful, let's please not make this a debate but rather a civilized conversation with a lot of information sharing; I am only saying this because one of my other threads about tunes turned into a small mess at the end.

Thank you all in advance.

larryn · 07-05-2011, 08:08 PM

All of answers to these questions are readily available to you. If you are seriously thinking of modding, I would suggest that you do some of your own research as there are quite a few paths you can take.

You found the correct forum, just run a few searches, and you'll have your answers!

BrokenVert · 07-05-2011, 08:21 PM

Search is your friend

You're limited to about 400-450 whp stock by the turbos. After that you are limited to about 550-600 HP by the fuel system and the transmission.

What happens after that hasn't been fully explored yet as far as I know

SSIMPS · 07-06-2011, 01:30 AM

Quote:

Originally Posted by BrokenVert

Search is your friend

You're limited to about 400-450 whp stock by the turbos. After that you are limited to about 550-600 HP by the fuel system and the transmission.

What happens after that hasn't been fully explored yet as far as I know

really we are limited to about 450 with the fuel system but we are using meth as a fueling bandaid. unfortunately upgraded fuel system doesnt exist yet (or we cant get it atleast) but upgraded turbos do.

BrokenVert · 07-06-2011, 08:31 AM

Quote:

Originally Posted by 330iSB

really we are limited to about 450 with the fuel system but we are using meth as a fueling bandaid. unfortunately upgraded fuel system doesnt exist yet (or we cant get it atleast) but upgraded turbos do.

Fair enough. AR was experimenting with a supplemental port injection system last year, not sure what's going on with that as of now.

But I know for a fact that the step gets a bit grumpy once you go past 500bhp. It won't shift at wot anymore. You need to lift and go again and pretend it's a clutchless manual

07-05-2011, 07:52 PM	#1
KinoBoom Lieutenant 40 Rep 468 Posts Drives: 2018 M2 Join Date: May 2011 Location: Austin, Texas iTrader: (0)	What is the limit of the N54 engine? How much can you do to the engine before you reached too far or the limit? 1- In terms of HP gain, what is the most you can go before you have to modify the engine internally 2- In terms of Boost gain, same as above 3- When you go larger turbos, what does the work entail? (From mapping to custom software maybe or is there currently a map that works with larger turbos?) 4- Who makes internal parts that are stronger and better than stock for this engine? (who is super reliable?) 5- Who makes larger Turbos for this engine? Sorry for all these questions, I am trying to figure out which route i am going to take on this car; if keeping it long term it will mean a lot more than just a cobb tune and an exhaust for me, i will have to go hard core with larger turbos, custom tune, internal engine work... Any input is very helpful, let's please not make this a debate but rather a civilized conversation with a lot of information sharing; I am only saying this because one of my other threads about tunes turned into a small mess at the end. Thank you all in advance.
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07-05-2011, 08:08 PM	#2
larryn Lieutenant General 2153 Rep 10,176 Posts Drives: '97 332ti, '21 X5 45e, '16 GT4 Join Date: May 2005 Location: Seattle iTrader: (2)	All of answers to these questions are readily available to you. If you are seriously thinking of modding, I would suggest that you do some of your own research as there are quite a few paths you can take. You found the correct forum, just run a few searches, and you'll have your answers!
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07-05-2011, 08:21 PM	#3
BrokenVert Resident Kerbalnaut 479 Rep 10,703 Posts Drives: Topless Brute/Hybrid Boogaloo Join Date: Apr 2009 Location: Fahrvergnügen/NY iTrader: (0)	Search is your friend You're limited to about 400-450 whp stock by the turbos. After that you are limited to about 550-600 HP by the fuel system and the transmission. What happens after that hasn't been fully explored yet as far as I know __________________
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