will keep eye on this .......

 

Good looks on being the dude who tests it solo. This is a very valuable contribution.

 

subscribing

 

Sweet...subscribed

 

Ditto.

 

opcorn:

 

There already is a "DIY" of sorts http://www.crzforum.com/forum/do-yourself-articles/10319-diy-honda-fit-intake-manifold-30-mins.html

Will be interesting to see the actual gains from the manifold alone though.

 

Sweet. I can strike that off the list.

It's gonna take 5 days to deliver the manifold via FedEx, then I have finals next week, so I'll have to get it done the following week.

 

Can't wait

 

opcorn:

 

subscribing! cant wait to finally see the results

 

Question: would it be better to do the two dyno runs on two separate days to give the ecu time to settle in to the new manifold, or just do it same day?

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From monitoring logs and reading tuning forums, I really don't think the ECU takes time to learn anything. Maybe a few minutes, but all the air and fueling stuff happens fast, in real time..
That's a fact of any MAF based vehicle.

There appears to be only one value that changes over a larger time frame, and that's the Ltrim.. (long term fuel trim) which is to adjust to seasonal variations, etc.

I could be wrong.. but honestly believe all this "ecu has to learn" crud is either left over from older vehicles 10 years ago, or is just BS. After flashing and resetting everything in the ECU, it just takes about 5 minutes of driving for the fuel trims and throttle learning, and all that stuff to happen and be back to 100%.

 

So, same day.

 

Subscribingopcorn:

 

Just disconnect the battery for a min or so, that resets the ECO and lets it relearn. As long as you don't disconnect the TB, as then you will have to do a idle relearn as I understand it.

 

Disconnect the TB from where? Doesn't it have to come off to be placed on the new manifold?

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yea, it has to come off, but i dont think you have to disconnect it. only time you have to disconnect it is if you're swapping it out

 

You only need to let the throttle body hang there while you take the manifold off.

 

hey tony, did you reuse your gaskets when you put this on?

 

So I just finished ordering a 2010 Honda Fit Sport 5MT intake manifold. I'll be doing before and after dyno runs as soon as it comes in. My car's completely stock, so this should help us isolate the gains from the manifold alone. Needless to say.. I'M EXCITED AS HECK! :beer:

Pics, charts, and hopefully a DIY to come. :vtec:

How about a part number list of the items needed for this mod ?

J

 

Do me a favor and try to drive normal and not get on it so much so you can gauge if it affects MPG lol.

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I cannot promise you that lol

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Bad news this morning. The part is on backorder until 4/9. Looks like we'll have to wait a bit longer.

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I doubt it will affect mileage much one way or the other. I want to know if it adds power below 3000 rpm. There are several hills on the freeway part of my commute that force me to shift down to maintain 70. It wouldn't take much and I wouldn't have to drop that gear. I already have the:
Takeda intake
P2R down pipe
2 1/4" stainless custom exhaust from there back

There isn't a lot more I can easily add for performance.

 

Could someone please measure the internal diameter for the runners and for where the throttle body bolts to the chamber on the US fit manifold so that I can compare measurements with the UK version to see if they are the same.

Thanks

 

HOLY triple post, batman! That's considered bad etiquette, jamez.
I ask people to measure the diameter opening of this thing, TB side, several times, and no one answers.. but I don't triple post about it.
(No offense to anyone, but people here seem to be less about numbers, and more about what feels or sounds good. Simple measurement or math could put SOO many arguments on this forum to bed, but no one is interested in the facts)

 

I'll get you the numbers when it comes and I remove the stock manifold if no one answers you by then.

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Sorry about that, I wasn't aware that you weren't allowed to do it and it was more because I wasn't sure which thread I should post in.

I have acquired me now a UKDM Fit Manifold, so I guess the only way i'll find out if it's any better is if I take mine off the CR-Z and compare?

My apologies again for the bad etiquette, my aim wasn't to annoy any of you guys!!!

 

Must be a line at the dyno shop?

 

No. Just a line to get the stupid manifold. Backorder fail.


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