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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Performance mods at 105k?



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      02-19-2014, 08:05 PM   #1
prepster
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Performance mods at 105k?

Ok, so once i do my next maintaince (ofhg, vcg, sparkplugs, oil change, etc.) i plan to do the following mods to give my daily driver a moderate boost in power;

1) jb4 tune (map 5 or map 1)
2) vsrf dp
2) vsrf 5 inch intercooler
4) still debating on afe dci w/heat shield (dont like the excess noise too much but if it helps my engine last longer then yes)
5) still debating on the charge pipe since i heard it cracks

Would these mods be overkill to my engine that has 105k miles? I havent had any major problems beside the usuall hpfp, waterpump, tstsat, and ofhg/vc leaks. Also, will my transmission be able to hold up to the added extra power? I know this has been talked about be before but just want to get an idea if its even possible to consider adding these mods...thanks im advance for your advice
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      02-19-2014, 08:19 PM   #2
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105K is not that high mileage. So no. I'd feel totally comfortable tossing a 6466 top mount on a 100K N54, assuming it was properly maintained.

Are you AT or MT? AT will hold FBO torque, MT with a better clutch and perhaps SMFW.
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      02-19-2014, 08:23 PM   #3
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yes yes yes yes yes

you'll be fine. that will more than a moderate boost in power. add back end flash to your list. and walnut blast your intake valves and get a occ and rb pcv valve. As you push more power, weaker parts will start to show and u may have some unexpected maintenance. other than that i don't see why it wouldnt be possible to consider adding mods loll
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      02-19-2014, 09:57 PM   #4
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Yes i have an automatic, ill look into the rear end flash and hopefully that will help my transmission, i already did a tranny fluid drain and refill 40k miles ago so hopefully it will hold up. Ok after reading other threads, i am looking forward to fbp, btw, does placing catless dp make the exhaust tone raspy? I love the tuned exhaust sound that the car already comes with
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      02-19-2014, 10:44 PM   #5
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Quote:
Originally Posted by prepster View Post
Yes i have an automatic, ill look into the rear end flash and hopefully that will help my transmission, i already did a tranny fluid drain and refill 40k miles ago so hopefully it will hold up. Ok after reading other threads, i am looking forward to fbp, btw, does placing catless dp make the exhaust tone raspy? I love the tuned exhaust sound that the car already comes with
Back End Flash ≠ Transmission Control Unit Flash

A Back End, which was suggested by @iturbo_bmw is a flash of the DME(ECU). It is often done to help with fueling/etc and to assist the Piggyback ECU (Procede, JB4, etc).

A TCU Flash isn't a bad idea either, Alpina TCU Flash is what I would recommend/is the most common for 6AT applications. I personally love it, especially as you get into higher power levels.
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      02-19-2014, 11:44 PM   #6
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Quote:
Originally Posted by prepster View Post
Ok, so once i do my next maintaince (ofhg, vcg, sparkplugs, oil change, etc.) i plan to do the following mods to give my daily driver a moderate boost in power;

1) jb4 tune (map 5 or map 1)
2) vsrf dp
2) vsrf 5 inch intercooler
4) still debating on afe dci w/heat shield (dont like the excess noise too much but if it helps my engine last longer then yes)
5) still debating on the charge pipe since i heard it cracks

Would these mods be overkill to my engine that has 105k miles? I havent had any major problems beside the usuall hpfp, waterpump, tstsat, and ofhg/vc leaks. Also, will my transmission be able to hold up to the added extra power? I know this has been talked about be before but just want to get an idea if its even possible to consider adding these mods...thanks im advance for your advice
I'm not sure why folks see 100,000 miles as some magical number where the engine falls apart and can't take some extra strain.

Tune and enjoy!

As long as you have maintained your car and changed your oil on time there is no reason your engine is not as strong as it was at 20,000 miles or earlier.

Of course the real way of knowing your engine strength comes down to a compression and leak down test but I'll tell you right now I see no issue putting those modifications on the car at that mileage.

Had you said 200K I would probably say you are playing with fire.
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      02-20-2014, 12:06 AM   #7
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thanks, i appreciate the advice and help, looks like i will be saving up for some future power mods for sure.
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      02-20-2014, 01:36 AM   #8
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Quote:
Originally Posted by prepster View Post
Ok, so once i do my next maintaince (ofhg, vcg, sparkplugs, oil change, etc.) i plan to do the following mods to give my daily driver a moderate boost in power;

1) jb4 tune (map 5 or map 1)
2) vsrf dp
2) vsrf 7 inch intercooler
4) dci
5) BT cable for backend flash
6) Alpina trans flash

Would these mods be overkill to my engine that has 105k miles? I havent had any major problems beside the usuall hpfp, waterpump, tstsat, and ofhg/vc leaks. Also, will my transmission be able to hold up to the added extra power? I know this has been talked about be before but just want to get an idea if its even possible to consider adding these mods...thanks im advance for your advice
fixed.
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