[jc5988]

After my PI and ESS installed, car runs great. much more low end torque and engine rev up pretty nice. However, it still feels too robust and rather soul less... after few weeks, i finally decide to have the dealer replace it for me.

My biggest hope for this system is probably gain good sound from rev matching, i just love to hear those race car doing it on the track. but O man..... this is better then what i was hoping for, this thing is A M A Z I N G when i blip the throttle on freeway. Im sorry, i dunno how to put it in words, you just have to listen to it in person.

Full throttle is also fantastic, you can really hear a lot of detail and definition of the engine. I guess bmw deliberately dont want new customer to hear it in order to put shine on the 335i... they know damn well turbo charger destroy the exhaust sound quality.

I really feel like im driving a completely different car now, really dont care that much about performance gain from it. It turns my car into something special that i can enjoy everyday

Update: after a few days of driving, didn't notice too much difference in performance until last nite I drove it with two other guys on the car. There is definitely more torque, uphill it just keeps on pulling into high rpm. Especially when you drop down a gear or two on highway, the accelerator feels very light and smooth.

Similar to my PI, performance smoothed out and got better in a few days of driving.

[kamek]

Congrats and enjoy! Do a secondary cat delete and you'll be even happier.

[Hooy]

Grats, mine is coming from overseas

How do you like your ESS tune?

[jc5988]

Originally Posted by kamek

Congrats and enjoy! Do a secondary cat delete and you'll be even happier.

thats what im planning to do, notice any gain from secondary cat delete? I might need to get it hollowed out instead of chopping, cuz i dont deal with the hassle of put it back on when visiting dealership.

Originally Posted by Hooy

Grats, mine is coming from overseas

How do you like your ESS tune?

Its great!, a bit pricy, but well worth it. If you have N51, you can go check out my review about it. Not too sure about N52, i think there were a couple of guys with ESS tune on this board.

[kamek]

Originally Posted by jc5988

thats what im planning to do, notice any gain from secondary cat delete? I might need to get it hollowed out instead of chopping, cuz i dont deal with the hassle of put it back on when visiting dealership.

No performance gains to my knowledge, but a gain in sound and some welcomed rasp.

[OwnAge]

Congratz. You'll enjoy it for a long time

[Hunter51092]

Post A Video Of How It Sounds!

[1NS0MN1A]

Muffler delete Sounds even better

[jc5988]

Update: after a few days of driving, didn't notice too much difference in performance until last nite I drove it with two other guys on the car. There is definitely more torque, uphill it just keeps on pulling into high rpm. Especially when you drop down a gear or two on highway, the accelerator feels very light and smooth.

Similar to my PI, performance smoothed out and got better in a few days of driving.


Now im just waiting for it to pop and burb and get angrier.

[benzo23]

your video isn't working...

[jc5988]

Originally Posted by benzo23

your video isn't working...

once i get the exhaust fully break in, i'll get some video for you guys