Advice on induction kit/air filter any gains??
- Thread starter mcremin85
- Start date
I fitted a Simota induction kit on my 2.0 Z3 many moons ago along with an Eisenmann exhaust back box. I swear it made the engine rev smoother, and it sounded awesome. That said, marginal if any gain. Panel filters are basically not worth the cost.
Some form of heat shield and cold air routing from the front of the car direct to the cone will help for sure. Just don't expect much from a 2.0 engine, it's why I changed from my 2.0 to my first 3.0 Z4 - expensive way to get +80bhp though!
As said, these bits of kit sound great (make a great whooooosh) but will give marginal gains. One with a surround to ensure a flow of fresh air and to prevent heat soak. I was following @Lee In his Zed, I thought my window was cracked open because I could hear a whistling, turns out it was his car 30 yards up the road 
If it sounds faster, it must be 
If it sounds faster, it must be 
Robert Hill
Zorg Guru (III)
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Change filter for piper filter fits straight into your air box will give better air flow these engines need fresh air
The k&n cone will give hot air flow as the heat from engine will be pulled back into the engine
The k&n cone will give hot air flow as the heat from engine will be pulled back into the engine
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- Dec 8, 2011
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Your paper air filter is less restrictive than an oiled K+N or Simota filter.
Using a Dremel and some fibreglass, the air box can be modified to make it flow better. I measured my standard airbox at 444cfm @ 28" H2O, the modified one was 485cfm @ 28" H2O.
Heat shielding the airbox will reduce the temperature of the inlet charge, and make the air denser.
zroadster.org
Using a Dremel and some fibreglass, the air box can be modified to make it flow better. I measured my standard airbox at 444cfm @ 28" H2O, the modified one was 485cfm @ 28" H2O.
Heat shielding the airbox will reduce the temperature of the inlet charge, and make the air denser.
Pingu's M Roadster
http://www.ebcbrakeshop.co.uk/info-part-list?make=BMW&model=Z3&spec=3.2 M&year=1998 (R-S) now discs and pads are £298 Ultimax and Redstuff are different ;)
zroadster.org
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Enjoy...
Air Filter Box Modification
Looking at the intake system of the M Roadster, I thought that the air filter box could do with some improvement... I built a flow bench to measure the flow rate through the air filter box... but this rig would only measure comparative differences. So, I built another rig. The data from...
www.zroadster.org
Air Filter?
Gains?
well, ...they sound faster.
I achieved more by dieting and losing 7 pounds in weight, and I also breathed better..
Gains?
well, ...they sound faster.
I achieved more by dieting and losing 7 pounds in weight, and I also breathed better..
Got a Simota on my 2.8, sounds amazing , but to me it feels as though the engine is gasping when under hard acceleration and not reving as freely. Considering going back to a standard air box.
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- Dec 8, 2011
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You need some shrouding around that filter. If the air intake temperature has risen by 10°C, the air density has dropped by 3%. It probably negates any benefit from making the hole bigger.
That is what you gain, and that is for the driver. Loud exhaust is for everyone else. Volume UP.
View: https://youtu.be/QjS5-Uv0PoM
Tony.
Tony.
A friend (!) swapped the inlet manifold, air filter and cold air trunking on his 2.8 with rigorous testing between to record 0-60 time improvements. He got a better improvement from cleaning the MAF sensor with electrical switch contact cleaner.
The real problem with the 2.0 and the reason it gets a bad rap is it’s restricted from the factory.
Do a search for M54 manifold upgrade, “the” best modification I’ve ever done to mine. Doesn’t need to be off a 3.0 I just bought one that had the larger inlet ports it came off a 525 sport
Your’ll need the matching DISA valve and a throttle body adapter plate kit available on the bay, about £100 for the parts and took me about 3 hours to fit.
I ditched my cold air intake setup and now have the standard air box and a Pipercross filter.
Do a search for M54 manifold upgrade, “the” best modification I’ve ever done to mine. Doesn’t need to be off a 3.0 I just bought one that had the larger inlet ports it came off a 525 sport
Your’ll need the matching DISA valve and a throttle body adapter plate kit available on the bay, about £100 for the parts and took me about 3 hours to fit.
I ditched my cold air intake setup and now have the standard air box and a Pipercross filter.
Ive got one very similar.
Had a drilled air box before but this is louder.
Mine likes yours is single vanos.
Has always felt very free revving compared to other (but I’ve always had a free flow exhaust, think you do too?)
try a stock one and see but doubt it’s the air box on it’s own. How old are crank and camshaft sensors?
My MAF is still probably but those caused ‘strangled’ performance issues.