Itg air filter?

[tolsen]

Re: Itg air filter?

Why don't you rig up instrumentation and measure losses in your inlet duct. Very simple setup and particularly accurate readings when using water gauge manometers.
I bet you'll find the stock system if far better than what ever poorly engineered custom system you may have installed.

[problemchild1976]

Re: Itg air filter?

When I had my forfour dynod before my map to peaked higher than stock with just induction and forge pipes

As for "intensive cleaning" I think rinsing unde or a tap is less intensive than going down the shops to get one

My induction kit is a steel mesh filter - even less filtration than foam/paper/cotton

JJ

[matty10]

Re: Itg air filter?

I don't know how you can say "poorly made silicon pipes" when you think about it the standard smart TIK is made of cheap plastic to keep costs down when mass producing, when you look at all properly engineered race cars, rally cars for example do they have cheap flimsy plastic intercooler pipes, nooooo they have nice thick 4 ply silicon pipes like the ones you buy from forge,

At the end of the day the logic is the smoother the internals on the air intake system including air box and all pipes the less drag the air has on it when passing through the system, more resistance means a lower rate or airflow which restricts performance,

[tolsen]

Re: Itg air filter?

The original inlet system is extremely efficient and any aftermarket replacement poorly engineered parts such as Forge et al will only worsen the system. Original TIK pipe, the duct upstream of turbo, is matched to the turbo. Fitting larger TIK pipe or a substandard aftermarket silicon TIK will adversely affected turbocharger performance and life. Total frictional restriction losses in standard inlet ducting including air box and paper filter on the 450 Cdi is only in the region of 60 Watts or 0.08 HP. On a well mapped petrol 450 perhaps twice of above when running flat out.

Assume you fit a well designed after market inlet system that improves inlet duct losses by a massive 50% and you ignore the detrimental reduction in turbo charger performance by upsetting airflow before turbo. The gain is no more than 0.08 HP but will overall become negative when considering the adverse effect on turbo charger performance.

[problemchild1976]

Re: Itg air filter?

You are assuming they haven't fitted smaller/poorer inlet system (TIK, filter, airbox) to restrict performance so they can vary the bhp in different models .... Pure, pulse, BRABUS

Plus then they have to meet various EU legislation so may reduce bhp through hardware rather than software (exhaust, inlet, manifold)

Plus you seem to be assuming the turbo is a bespoke design to that engine - when its invariably an off the shelf product so has not been designed to be mated to anything in particular.

I don't think it's as simple as you make out ......on any car.

JJ

[Kapt. Q]

Re: Itg air filter?

You are assuming they haven't fitted smaller/poorer inlet system (TIK, filter, airbox) to restrict performance so they can vary the bhp in different models .... Pure, pulse, BRABUS

Plus then they have to meet various EU legislation so may reduce bhp through hardware rather than software (exhaust, inlet, manifold)

Plus you seem to be assuming the turbo is a bespoke design to that engine - when its invariably an off the shelf product so has not been designed to be mated to anything in particular.

I don't think it's as simple as you make out ......on any car.

JJ

Agreed, and then you are trying to take things further than originally intended by the designers which means burning more fuel, which means moving more air through the entire system. It is not about just changing one part but redeveloping the whole system to achieve what you want as opposed to the compromises Smart had to make to please all and meet regulation, economy, production cost, etc.

Cheers!

[problemchild1976]

Re: Itg air filter?

My reason for an induction kit - it sounds amazing

Heat soak etc don't bother me that much as I rarely use the full 207bhp

JJ

[matty10]

Re: Itg air filter?

Problem child I've seen a few induction kits for the brab forfour now and out of them all I quight fancy yours but were did you buy it from?

[problemchild1976]

Re: Itg air filter?

I got mine 2nd hand unused

But look on the Internet for powertec for colt CZt (it's the same engine) and are defo available

Or go K&N which has cotton (I think) cone and separate MAF adaptor

JJ