Would you supercharge a 2008 M3 with 75k miles after rod bearings change?

[tjav8b]

Really...just 4.5 psi? I thought guys were running 7-8psi safely with a stock bottom end?

[kkhurr]

7-8 PSI yes. not sure which kit uses 4.5

[Sered]

Originally Posted by kkhurr

7-8 PSI yes. not sure which kit uses 4.5

VF540 and the ESS equivalent run around 4.5-5psi.

[BombaE90]

Originally Posted by kkhurr

great responses everyone. thank you. I think im gonna bite the bullet and go for it. its something ive always wanted to do.

FWIW, I had Active do my stage 2. Being in Miami makes it easy.

[SflBimmer8484]

Originally Posted by BombaE90

FWIW, I had Active do my stage 2. Being in Miami makes it easy.

[kkhurr]

Originally Posted by Andrew@ActiveAutowerke

Andrew I was the one who called you on monday btw. scheduled for next thursday. Appreciate the help again everyone.

[SflBimmer8484]

Originally Posted by kkhurr

Andrew I was the one who called you on monday btw. scheduled for next thursday. Appreciate the help again everyone.

See ya Thursday! If you have any more questions or concerns please let me know.

[SHADY1]

Originally Posted by kkhurr

Andrew I was the one who called you on monday btw. scheduled for next thursday. Appreciate the help again everyone.

Congrats good stuff glad you decided to do it can't go wrong with a Active Autowerke SC kit

I am posting late because I just seen your post but it might help someone else on the fence. I have 2008 E92 M3 put a VF540 kit on at 92,000+ miles upgraded to VF620 at 106,000+ miles and change rod bearings just in time mine was on borrowed time. Up graded to the VF650 kit and I am currently at 134,000+ miles on my M3

[Iyzmi]

Originally Posted by TrevorM3

no, 08 is too old imo.


plus daily driver, definitely not.

What about an 08 is too old? How is an 08 with 75k miles any different than any other model year E9x with 75k miles in terms of bearing wear or supercharger reliability?

I say go for it OP!

[kkhurr]

Originally Posted by SHADY1

Congrats good stuff glad you decided to do it can't go wrong with a Active Autowerke SC kit

I am posting late because I just seen your post but it might help someone else on the fence. I have 2008 E92 M3 put a VF540 kit on at 92,000+ miles upgraded to VF620 at 106,000+ miles and change rod bearings just in time mine was on borrowed time. Up graded to the VF650 kit and I am currently at 134,000+ miles on my M3

Very helpful! Thank you!

[kkhurr]

Originally Posted by Iyzmi

What about an 08 is too old? How is an 08 with 75k miles any different than any other model year E9x with 75k miles in terms of bearing wear or supercharger reliability?

I say go for it OP!

Thank you. Car is in shop now. Pictures to come. Im interested to see what the bearings look like actually...I didnt abuse the car for 75k miles but I definitely drove it like an M should be driven.

[BNBM3]

Saw your car at Active today. Congrats on the decision. Not sure if you saw my Silverstone E92 getting the same kit when you dropped yours off. Just got it back today. And of course, crazy rain and traffic so I drove home like a granny with my new SC.....

[kkhurr]

Originally Posted by BNBM3

Saw your car at Active today. Congrats on the decision. Not sure if you saw my Silverstone E92 getting the same kit when you dropped yours off. Just got it back today. And of course, crazy rain and traffic so I drove home like a granny with my new SC.....

Orange Plenum...oh yeah. i saw it. lookin strong man.

[BNBM3]

Originally Posted by kkhurr

Orange Plenum...oh yeah. i saw it. lookin strong man.

Lol, the orange manifold was TEMPORARY. They put it on to do the initial tuning while waiting for mine from the painter. Orange is definitely not my style.

Here it is finished, it's painted to match the stoptech brakes perfectly:

[Killerfish2012]

Originally Posted by BNBM3

Lol, the orange manifold was TEMPORARY. They put it on to do the initial tuning while waiting for mine from the painter. Orange is definitely not my style.

Here it is finished, it's painted to match the stoptech brakes perfectly:

How many lbs of boost are you running?

[Killerfish2012]

Originally Posted by kkhurr

Wanted to make a poll but couldn't figure out how lol

-Very well taken care of.
-oil changes every 7500 miles
-will change rod bearings at the same time.
-has been a daily driver and will continue to be so
-no major problems before
-have read the other posts on supercharging. very helpful but want some direct opinions.
-about 2 seconds away from pulling the trigger

[BNBM3]

Originally Posted by Killerfish2012

How many lbs of boost are you running?

If I recall, between 7 and 8. The car was dyno tuned and running as expected for the kit.

[Killerfish2012]

Originally Posted by BNBM3

If I recall, between 7 and 8. The car was dyno tuned and running as expected for the kit.

Good luck with her, and have fun! Life is short.

[BNBM3]

Originally Posted by Killerfish2012

Good luck with her, and have fun! Life is short.

A couple DCT issues actually, will get that sorted out this week then hopefully off to the races...

[kkhurr]

Originally Posted by BNBM3

A couple DCT issues actually, will get that sorted out this week then hopefully off to the races...

BNBM3 how long was ure car at Active for out of curiosity? And second how is it so far? It hasnt been raining so im sure uve stepped on it a bit.

[BNBM3]

Originally Posted by kkhurr

BNBM3 how long was ure car at Active for out of curiosity? And second how is it so far? It hasnt been raining so im sure uve stepped on it a bit.

My car was at active for I think 3 or 4 weeks. The painter was the holdup since we did a custom painted manifold, and that was unfortunate. Outside of their control.

The DCT is slipping and so I can't run it. But I did get a couple pulls before it slipped and it's pretty absurd how fast the car is now. It'll be back at AA this week I think to sort out the DCT issue. It's something nobody has really seen and is probably software related (AA did not touch the DCT, so previous DCT software maybe).

[Joe S]

You can't beat the Harrop SC for quality and OEM finish and with only 5.5 pounds boost and over 530 horse power at the rear wheels. More expensive than some others but worth it