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Slugish and slow response

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Slugish and slow response

Postby Bruin [OP] » Apr 27 2012, 4:11am

I recently installed duel exhaust, CAI with throttle spacer. I have driven for about a month to see if there would be any difference in performance or economy. No major change in mileage up very little, but response is slugish and seems slower than before. I was wandering if the computer should be reset or does it do the upgrades automatically? My dealership thinks it might be an O2 sensor! Still on warranty, so booked in for dio. Anybody have this expierience, or suggestions on what next?
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Re: Slugish and slow response

Postby ASTE25 » Apr 27 2012, 4:14am

Get ready for them to charge you and say the problem is due to the mods you made.
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Re: Slugish and slow response

Postby EKinMN » Apr 27 2012, 4:20am

What Jordan said.
And I will add that it's possible that it is due to your exhaust. If back pressure is significantly low, you will experience exactly what you are talking about. I would research this, or go back to stock.
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Re: Slugish and slow response

Postby Bruin [OP] » Apr 27 2012, 4:35am

ASTE25 wrote:Get ready for them to charge you and say the problem is due to the mods you made.

The dealer did the CAI and throttle spacer, the exhaust was done by the shop that does the dealers!
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Re: Slugish and slow response

Postby ASTE25 » Apr 27 2012, 4:46am

Then disregard what I said.
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Re: Slugish and slow response

Postby Shawnb » May 05 2012, 8:24pm

I am curious about this to. My 2010 sierra has magnaflow cat back and airaid cai. When im at a stop and pin it, it slowly takes off then really takes off when it get to 3k rpm. But still nothing like it did when it was new. I noticed there is a lot of carbon buildup on the exhaust tip. I ordered a trinity programmer for it. Do you think that will take care of this somehow?

Any thoughts?
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Re: Slugish and slow response

Postby Bruin [OP] » May 06 2012, 3:06am

I'm not sure, I was thinking of tuning also. I thought the computer might not be adjusting to the new air flow? Mine changes radically from no response to wanting to take off without touching the throttle!
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Re: Slugish and slow response

Postby StarsnBars » May 06 2012, 3:15am

Sounds like either your CAI or spacer has a leak. Maybe revert back to stock top end and see what she does.
My money is on a install issue on the top end.


Oh yea. Tuner is one great mod. Love my Diablo. :D
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Re: Slugish and slow response

Postby Bruin [OP] » May 06 2012, 7:30am

Thanks I will check the top end. Since I had the CAI and Spacer installed, it never does the same thing twice! One time it will light em up, next it has the Polaris bogg! Mileage will go from 19-20 Hway to 14-15, just to big of changes for me!
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Re: Slugish and slow response

Postby Shawnb » May 06 2012, 5:19pm

Ive checked things over and over several times and no leaks or anything i could find. ThE black on the exhaust tip has me thinking its running really rich. Ill clean the tip them after a tank of gas its built up again. So im hoping that a tune will help.
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