[unic66]

Does a high flow panel filter require a MAF calibration?
Because on my stock N54 after I installed an AFE Pro dry filter,I think I lost some power according to butt dyno!

[zztwinturbozz]

If you don't have a tune you probably did lose power.

[unic66]

It sure felt like it!
Or maybe the DME compensates for the extra volume of air?

[E90Company]

335i's don't have MAF sensors. You didn't lose any power, it's in your head.

[marv85]

There is no need for intake at stock boost. You only need an intake when you are running high boost (>14psi) at which point the stock intake starts being a restriction... I hated DCIs but now I'm running almost 20PSI in the midrange. DCIs are crucial at that point.

Carl Morris also showed impressive gains by adding DCIs to this setup. He is at high altitude which makes DCIs even more crucial.

[Sparky68]

Originally Posted by marv85

There is no need for intake at stock boost. You only need an intake when you are running high boost (>14psi) at which point the stock intake starts being a restriction... I hated DCIs but now I'm running almost 20PSI in the midrange. DCIs are crucial at that point.

Carl Morris also showed impressive gains by adding DCIs to this setup. He is at high altitude which makes DCIs even more crucial.

Having just bought a 335i i am beginning to think i need a idiots guide to the tuning of these beasts!

[marv85]

Originally Posted by Sparky68

Having just bought a 335i i am beginning to think i need a idiots guide to the tuning of these beasts!

It's not that complicated. Well it depends what you're after I guess.

Are you stock?

[Sparky68]

Originally Posted by marv85

It's not that complicated. Well it depends what you're after I guess.

Are you stock?

Yeh. Dont even have the car at the moment, bought it and got a 2b2c code 3 days later. Dont want to go crazy with this one but maybe a decat ,CAI and a remap.

[marv85]

Originally Posted by Sparky68

Yeh. Dont even have the car at the moment, bought it and got a 2b2c code 3 days later. Dont want to go crazy with this one but maybe a decat ,CAI and a remap.

You will make a lot of power ( most of what can be made on stock turbos) with a tune+intercooler+intake(DCIs enough)+mixing in E85

DPs are also great and will help release back pressure but your exhaust will pop (saw your post on another thread hehe)

[unic66]

Originally Posted by marv85

There is no need for intake at stock boost. You only need an intake when you are running high boost (>14psi) at which point the stock intake starts being a restriction... I hated DCIs but now I'm running almost 20PSI in the midrange. DCIs are crucial at that point.

Carl Morris also showed impressive gains by adding DCIs to this setup. He is at high altitude which makes DCIs even more crucial.

So going back to my question,does it cause a power loss?On a stock setup that is?

[Sparky68]

Dont think e85 is generally available here in the UK although not looked to hard for it! Hehe the popping, yeh i had a 320bhp Focus ST straight through exhaust, cai,mapped and I use to enjoy lighting up the front of cop cars at the traffic lights. Blip , BANG! blip, BANG! lol Was funny until they pulled me and gave the Focus a once over [bastards]

So CAI or Cone filters, FMIC and a map should give me some fun?

[marv85]

You are asking about a panel filter. no It will not cause any power loss. I had it since I bought the car and all felt OK.
I've hard people reporting loss in torque when moving to a DCI on stock setup.
I personally removed the stock intake (and the high flow panel) when I was making >17psi of boost...

[Sparky68]

Originally Posted by unic66

So going back to my question,does it cause a power loss?On a stock setup that is?

I wouldnt of thought it would be anything noticeable if anything at all.

[marv85]

Originally Posted by Sparky68

Dont think e85 is generally available here in the UK although not looked to hard for it! Hehe the popping, yeh i had a 320bhp Focus ST straight through exhaust, cai,mapped and I use to enjoy lighting up the front of cop cars at the traffic lights. Blip , BANG! blip, BANG! lol Was funny until they pulled me and gave the Focus a once over [bastards]

So CAI or Cone filters, FMIC and a map should give me some fun?

COBB+FMIC+DCI (don't get a fancy intake and pay tons of money for it, invest the money in the tune and intercooler. DCI is enough). You'll be very happy

If you end up finding E85, or want to get meth injection, go for a custom tune with COBB like I did. That would give you tons of fun lol

[Sparky68]

Sorry for hijacking your thread OP but in my expereince a panel filter should give a slight increase, not a loss.

Thanks for the info Marv.

[marv85]

Originally Posted by Sparky68

Sorry for hijacking your thread OP but in my expereince a panel filter should give a slight increase, not a loss.

Thanks for the info Marv.

sure, hit me up if you need help

[unic66]

Originally Posted by marv85

There is no need for intake at stock boost. You only need an intake when you are running high boost (>14psi) at which point the stock intake starts being a restriction... I hated DCIs but now I'm running almost 20PSI in the midrange. DCIs are crucial at that point.

Carl Morris also showed impressive gains by adding DCIs to this setup. He is at high altitude which makes DCIs even more crucial.

Thanks for all the feedback,people!

[ihc95]

Originally Posted by zztwinturbozz

If you don't have a tune you probably did lose power.

^This. The stock tune is calibrated for the way the car is setup from the factory. The ECU isn't familiar with the high flow filter so while you probably aren't losing any peak hp or tq, the curve of hp and tq was probably affected. Get a tune and this discussion will be history.

With that said, I have a high flow panel filter and I dont really notice any power or throttle response improvements (I am tuned). I was expecting this before I got my filter but I just got it for the subtle "swoosh" sound.