RPM's hanging with Whipple tune?

[Sheff]

Hey guys I have had my whipple in for a while now and just noticed the last time i drove i did a wot pull in one gear then pushed the clutch in and coasted slowing down and i noticed my rpms would drop from 7k to 5k then hang there for a second or two then drop. Car pulls and acts completely normal and i never noticed it before wondering if anyone else has experienced it before thanks.

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[Foxracing19931]

Hey guys I have had my whipple in for a while now and just noticed the last time i drove i did a wot pull in one gear then pushed the clutch in and coasted slowing down and i noticed my rpms would drop from 7k to 5k then hang there for a second or two then drop. Car pulls and acts completely normal and i never noticed it before wondering if anyone else has experienced it before thanks.

Make sure intake hose isn't sliding off the tb had that happen when clamps were lose and I was getting rev hang

 

[RogerS550]

Mine did that on the factory tune, too. If I remember correctly, I believe it's an emissions control feature.

 

[Sheff]

Thanks roger il look into that. I almost never just do a pull in one gear then just push the clutch in to slow down maybe i just noticed it just want to make sure something isn't a little off causing it like what fox racing mentioned.

 

[RogerS550]

I searched Google for rev hang when I noticed mine was doing it. It also seems to help the synchros a little since the computer knows what rpm the next gear will be at.

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