Hi guys, nice to be here.

I was doing some research a while ago for intake kits for my Jazz GG6. I came across a few examples on this forum so I decided to create my own kit based on these.

I got everything fitted up to the car and have the layout the same as others on here but the car refuses to idle. It will start up for 5 seconds or so then just die.

Sometimes I'll get an engine warning light and other times not. Either way, it just won't run for more than a few seconds.

I spoke to a friend and we think it's the MAF sensor seeing too much air flow perhaps. I was under the impression that the MAF sensor would correct everything and the car would self-learn to a point.

I know others have a very similar setup so I'm just wondering how they got the car to run ok?

Pictures of my kit




I noticed that my MAF sensor was upside down as well so I flipped the pipe around and it made no difference at all.

I also installed the old air box and the car was running fine as we suspected the MAF sensor was bad.

Thank you so much.

 

I can't help you but I've also tried lots of different set ups and had running issues, yet others just wack anything on and runs fine.
I also bought another afm and still issues. On mine it just wouldn't rev properly, was undrivable it just revved to what it felt like at the time so tried a different smaller pipe which ran better so was drivable but had a bad hesitation changing from 1st to 2nd.
so I gave up with it. I just get the feeling some jazz's hate them and some don't mind, but of a lottery.

 

I'm not mod savvy enough to say exactly what's going on, but others here are - I hope they show up.
Thanks for switching back to the OEM airbox and confirming functionality though.

Oh dang, I just remembered. I think pipe diameter is one of the preset assumed variables that the computer uses in calculating how much fuel to add. think its an air velocity thing. I don't remember the math today but there was definitely a thread that covered this and stated the needed pipe diameter. I want to say 3.5", but if you can give me a bit i'll try to dig said thread up. Hopefully we can get you that number (unless you wanna try and get after it with some calipers), then you can swap or fab a piece and be all set.

I'm assuming you dont wanna dump a bunch of money in - if you did I'd suggest picking up the zero 1000 intake. they look well thought out.

There is a chance that changing pipe diameter will still leave you with an issue of too much air at all or specific times, causing driveability issues at all or specific times. just figured I'd mention that preemptively as a rabbit hole warning sign. but it should work.

Found that fast... It's 2.5"
The other thread
There are some fancypants threads on here about custom intakes, written by some of the fanciest, pantsiest people I know. Search "pipe diameter" and you'll dig up some good stuff.

EDIT: the above is for the ge8, you prolly need to measure your oem duct where the maf sits.

 

It’s probably because your pipe is way too big and way more air is going into the engine than the MAF is able to read.