PCV Decel Pop ... Easy fix?

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Jul 14, 2011 | 11:03 AM

#21

vickers1

Thread Starter

Road Warrior

Joined: Jun 2006

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From: Southeast GA

Quote:

Originally Posted by RoadRich2010

How do you know what RPM you are getting the popping at if you do not have a tach?

If I didn't have a tach and knowing what I know now, I would go into my map and change all the zero throttle settings from approx. 1500 to 2300 RPM. Change the zeros to 15 and road test it. Like has been said, you can go as high as 50 without any adverse effects. I would only put in enough to get rid of the pop though.

Jul 14, 2011 | 11:07 AM

#22

vickers1

Thread Starter

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Joined: Jun 2006

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From: Southeast GA

Quote:

Originally Posted by locodude

I kinda like the decel pop, am I just weird?

I love the scavenging sound when decelerating but I'm talking backfire and some of them loud. It's embarrassing to me.

Jul 14, 2011 | 01:13 PM

#23

upstate tim

Road Captain

Joined: Jun 2010

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From: send money!

scavenging sound +1

I dated a girl once who... oops wrong forum

Jul 14, 2011 | 06:12 PM

#24

ke5rbd

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Joined: Apr 2010

Posts: 1,648

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From: Monroe, Louisiana

Quote:

Originally Posted by riff1006

If you can open your map on your laptop, go to each cylinder, and in the 0 column from 1750 up, change all those numbers from 0 to 15. You can increase or decrease by 5s and you can go as high as 50 without issue. Try it.....you won't hurt anything.

i noticed that increasing in this range also improves engine braking a bunch. It will get rid of the deceleration pop also if that is what is causing it.

Jul 20, 2011 | 09:22 PM

#25

highhillbill

Intermediate

Joined: Nov 2008

Posts: 37

Likes: 1

From: SW ohio

ok im a newboobie at EFI how do you go into your map on a laptop?? Sounds a little Technical for a Carb Guy..??

Jul 21, 2011 | 06:57 AM

#26

3/4 life crisis

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From: Indiana

Subscribed.

May 22, 2014 | 09:07 AM

#27

brawner11

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Joined: Feb 2013

Posts: 338

Likes: 5

From: Mattoon il

Quote:

Originally Posted by smithbrl

That is what I did and goodby decel pop

Okay what did u do to get rid of the decel poping

May 22, 2014 | 10:12 AM

#28

ThisIsMe

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Joined: Jun 2013

Posts: 323

Likes: 5

From: MA

Lots of good info here. I do have a bit of decel pop as well. Like others I do not mind most of it, but I am thinking it is a little to much.

Mine came off the dyno like this.

For the record how does adding fuel as such effect overall MPG? Anyone notice a difference?

Surprisingly my decel pops seemed to of gotten worse after replacing the fuel filter at 40K. Dyno was at 30k. Had another dyno guy tell me I should of had the fuel filter replaced before the 30k dyno. Not sure if it all correlates, but it does seem to be pooping more after the new filter. Or could be I am just imagining it.