air induction

[ryanrichards]

can someone point me in the direction of a reasonably priced induction kit for a twingo 2 rs.
thanks in advance.

 

[flowerpowerdave]

cheaper to make your own and easy to do.

 

[ryanrichards]

id rather just buy one that fits in easily

 

[lewiswyn]

Would be cheaper to make your own, I used a RAM air filter and a flexi intake pipe to connect the cold air feed from the slam panel, total cost of about £35...

However, K&N make a the 'Apollo CIS' kit, which can be bought from a lot of places online for around the £170-180 price, they have full instructions for fitting on their site, and comes with all clips and brackets etc. I know a BMC CDA kit exists for around £150, but haven't checked to see if fitting instructions for the 133 exist.

I much prefer to save money and spend a little more time figuring things out though, as i can't justify £150 plus on an air filter. If you do want to go DIY then the Diameter of the intake is 76mm/3inch :mrgreen:

 

[Forza]

Do please remember that an induction kit from BMC or K&N will make more noise but will make less power and will make the power/torque curve worse. Even after remapping.

You get a bit more noise and a small bump in power with a replacement air filter from for example BMC. The Renault air box is extremely optimized and you only need an induction kit when you boost it. The Twingo R1 still uses the standard air box with a 160 bhp K4M engine.

 

[lewiswyn]

Do please remember that an induction kit from BMC or K&N will make more noise but will make less power and will make the power/torque curve worse. Even after remapping.

You get a bit more noise and a small bump in power with a replacement air filter from for example BMC. The Renault air box is extremely optimized and you only need an induction kit when you boost it. The Twingo R1 still uses the standard air box with a 160 bhp K4M engine.

Good info, didn't know that the K&N and BMC kits produced less power than the stock airbox! :?
What do you have Forza? Have read a few threads and see people really do rate the BMC panel filter in the stock airbox? Have also read that apparently the removal of a rubber bung on the stock airbox will also produce more noise, is this true?

 

[Forza]

I have the BMC replacement air filter in for about 12k miles. Recently cleaned it, still looks brand new! Sound will improve by removing the rubber bung yes, but this will also create an opening in the air box in the fairly hot engine bay. This way the engine gets more hot air and therefor less power (the difference will probably not be noticeable). But I haven't had the bung in (previous owner removed it) and after remapping with the BMC air filter my Twingo made 120 bhp to the wheels (up from 117). This is about 135-140 at the crank depending on who you ask . The only issue the tuner had was a high air temperature which can be explained by the missing bung. Haven't gone through the trouble of finding a replacement because I like the sound this way.

 

[ryanrichards]

I'm currently using a ktr panel filter in the stock air box, but I have plans to change the exhaust on the car to improve breathing but theres not much point in putting a less restrictive exhaust on it with limited cold air induction on the other side.
Was just wondering what other people have done and if they notice any difference in power. Thanks for the input, a lot of good information on this forum!

 

[lewiswyn]

I'm currently using a ktr panel filter in the stock air box, but I have plans to change the exhaust on the car to improve breathing but theres not much point in putting a less restrictive exhaust on it with limited cold air induction on the other side.
Was just wondering what other people have done and if they notice any difference in power. Thanks for the input, a lot of good information on this forum!

On the basis of what Forza has said, it seems the K&N and BMC kits available actually reduce cold air flow due to the loss of power? I know for a fact the RAMair filter set up i've used will be producing less power than stock because it's letting in so much hot air from the engine bay, but i like it because of the noise :shock: :lol:

 

[ryanrichards]

if you make sure theres a cold air feed and a less restrictive filter then theres no way it can reduce power ? Does anyone know of any aftermarket throttle bodies ? That would also allow more air in.

 

[Forza]

Unless you go with cams, ported head and decat exhaust an induction kit will only give more noise and less power. Why would Renault go with a standard airbox in the R1 rally Twingo that produces 160 bhp? You'll never get to those numbers with just an exhaust and panel filter/induction kit. And if a tuner say's he can do that he's lying.

 

[flowerpowerdave]

if you wanted to improve bhp inya car, maybe shud have gone for a blown motor, not n/a, cost a fortune to increase power in a n/a car,

 

[ryanrichards]

I want to do as much as possible without spending massive amounts! id much rather slightly modify my car and have something I'm proud of than go and buy a faster car. Anyone can go and buy a corsa vxr for 200bhp, but id rather have something a little rarer and unique.

 

[Dubz]

if you make sure theres a cold air feed and a less restrictive filter then theres no way it can reduce power ? Does anyone know of any aftermarket throttle bodies ? That would also allow more air in.

Someone posted a some information about a different size throttle body I can't remember who but they did the maths and a larger bore throttle body would actually negatively impact the 133's engine as it would almost starve the engine due to the air velocity.

ITB's with a standalone ECU and more aggressive cams would be your best bet to get the most out of the induction side of the engine. As the standard set up is pretty damn good.

You could delete the resonator from the air intake which just reduces the noise level. And taking the bung out isn't going to change the actual power level of the car.