How Can New Induction Pipes Make Such A Difference

[Grim.Badger 15]

I used to have two very badly split induction pipes, the one from the front of the car to the filter and the one from the filter to the AFM. When I say they were bad, there was only about an inch of rubber holding them together so the pipes had to be taped together. The rubber was also very weak and soft.

Since replacing them the car is completely different. It now gets my heart racing when I'm overtaking and pulls you back in the seat when accelerating. It used to feel strangled, which I figured was because it was tuned to 95ron but apparently not.

My gf says it feels like a GTi for the first time.

How can this happen? Were the old pipes collapsing when the engine was under load and restrcting flow significantly? From what I've read only the pipe after the AFM should have any real difference on performance, or is that idle?

[jackherer 543]

if they were leaking air then the air flow meter wasn't registering all of the air the engine sucked in and so the fuelling would have been down.

[Jonmurgie 2]

But he's saying the splits/leaks were BEFORE the AFM so it was still essentially metering all the air that was coming into it...

 

I guess the knackered pipes were causing more of a restriction that you thought! At least it feels better now

[jackherer 543]

oops, I didn't spend long enough reading that...

 

they will have been collapsing and causing a restriction almost certainly, did you hear any weird whistling noises at all?

[Grim.Badger 15]

oops, I didn't spend long enough reading that...

 

they will have been collapsing and causing a restriction almost certainly, did you hear any weird whistling noises at all?

 

No but my exhaust blows and sounds like a big chav tin can so I doubt I'd have been able to hear anything properly, although the induction note does seem different.

Having better power delivery really highlights some of the handling querks I need to sort though

[futura 3]

Also the split pipes were sucking hot air from around the engine and the exhaust, where as the new pipes are bringing cool air from the front which makes a considerable difference

[hengti 2]

sounds good

mine are sort of held together with duct tape at the moment. can i ask where you got your new hoses from and how much they were?

cheers

[Grim.Badger 15]

sounds good

mine are sort of held together with duct tape at the moment. can i ask where you got your new hoses from and how much they were?

cheers

 

Off a 1.6 GTi engine in a CTi at a scrapyard for £0 The pipe from the filter to AFM needed a small bit of persuasion but nothing more than gently easing it on with a screwdriver.

Peugeot sell them for about £12 each though so it would hardly break the bank. I will be getting new ones soon as these replacements are getting a bit old and look ready to crack and split.