Fn2 flat spot, lag, mid throttle - Page 3 - Civinfo
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post #41 of 43 (permalink) Old 16th June 2019, 07:50
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Originally Posted by Connorlavo View Post
Already done, pick it up tomorrow and also have an unmodified air box to collect of someone, put it back the way it was and test.

Then I can rule that out,

An yes when it matters the car can shift on, but I drive for an hour to work through various towns an traffic, it annoys the hell out of me at lower revs
From what I've read, and a little bit of experience, these cars are very sensitive to 1. Any air filter change (air filter, modified box, CAI) or 2. Standard fuelling/map

I put a short ram CAI on and the flat spots were terrible. Went back to the OEM box and it's much better.

Ultimately, apart from doing your standard service items, a remap is the way to go to sort the fuelling.
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post #42 of 43 (permalink) Old 19th June 2019, 18:24
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PCV valve query here.

Symptoms - Throttle lag soon after starting. Gets better, but car feels a little flat. Fuel economy not brilliant.

I checked the PCV valve, pinching the pipe with some long-nose pliers. No ticking occurred, and there was a sound of air rushing after I released the grip, and it was fairly random as to when this sound went away. The valve looks as old as the metal it's bolted into. I suspect it's quite old, if not original.

Replacement time?
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post #43 of 43 (permalink) Old 20th June 2019, 09:09
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I did the pinch test last night, the ticking sound went away when I pinched the pipe but it wasn't massively obvious until I put my head beside the top pulley. Then, when I heard it, I couldn't not hear it For the sake of £30 or so, I'm going to get a new one (maybe a top pulley too)
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  Civinfo > Civic Type R > Type-R

flat spot , fn2 , lag , lambda

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