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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKV-A5 Golf/Jettas

VW MKV-A5 Golf/Jettas Discussions area for A5/MkV Jetta/Golf (2005/2006 PD and 2009 CR).

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Old February 5th, 2012, 12:35   #1
powers0430
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Default 2010 jetta running sluggish any help??

Okay i have a 2010 jetta 2.0t with about 15k miles on her. Love the car, my problem i am having is it seems a good bit more sluggish then my friends 09. what i mean is that when you punch the pedal on his it goes no real lag mine delays for a few seconds then pulls till about 3000 then stops also mine doesnt start to spool until about 1900 or so is this all normal? they are both 6spd manuals and stock beside a CAI.
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Old February 5th, 2012, 13:13   #2
powers0430
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i heard from someone that it could be a programming issue that can just be tweak to cut down on the turbo lag? i know its not a race car but it should have some more get up then it does
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Old February 5th, 2012, 13:16   #3
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Quote:
Originally Posted by powers0430 View Post
Okay i have a 2010 jetta 2.0t with about 15k miles on her. Love the car, my problem i am having is it seems a good bit more sluggish then my friends 09. what i mean is that when you punch the pedal on his it goes no real lag mine delays for a few seconds then pulls till about 3000 then stops also mine doesnt start to spool until about 1900 or so is this all normal? they are both 6spd manuals and stock beside a CAI.

Both cars came from the factory with a 'CAI'. Change your fuel filter, return the car to stock and see if there are any improvements.

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Old February 5th, 2012, 13:30   #4
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Both cars came from the factory with a 'CAI'. Change your fuel filter, return the car to stock and see if there are any improvements.
Bill
just changed it and ill slap the factory filter back on ... i just know when i had my diesel truck CAI , Exhaust and tuner boosted hp and doubled my mpg. i should have done more research before jumping into buying things.
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Old February 5th, 2012, 14:07   #5
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You're a fast learner. These little motors are completely different from light truck cousins. Best to learn or ask before modding. Welcome aboard.
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Old February 5th, 2012, 15:36   #6
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Okay cool i will be sure to ask first thank you ... You think it could have lost some power bc of that CAI ?

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Old February 5th, 2012, 15:40   #7
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And do you know why a CAI is bad for the tdi ?

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Old February 5th, 2012, 16:40   #8
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Are we talking about a 2010 Jetta TDI, or a 2.0T?

Diesel TDI, or Gas Turbocharged Direct Injected (not TDI) engine?
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Old February 6th, 2012, 03:00   #9
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Are we talking about a 2010 Jetta TDI, or a 2.0T?

Diesel TDI, or Gas Turbocharged Direct Injected (not TDI) engine?
Its diesel ... i believe its the cjaa i just thought id throw it out bc every is always talking about the 1.9 sorry about the confusion.


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Old February 6th, 2012, 08:28   #10
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I doubt you would lose any performance because of an aftermarktet air filter, unless you disconnected the MAF and didn't pkug it back in, but then you'd get a CEL. Is it an oiled filter?

That said, there a few problems with the aftermarkter air filters:

1. They offer no performance upgrades.
2. If it's an oiled filter, the oil will eventually contaminate you MAF sensor.
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Old February 6th, 2012, 08:47   #11
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1. They offer no performance upgrades.
Unless other upgrades are also preformed. Many here have benifited from a true CAI, but it wasn't their first mod, and yes this is on a CJAA.
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Old February 6th, 2012, 09:08   #12
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Unless other upgrades are also preformed. Many here have benifited from a true CAI, but it wasn't their first mod, and yes this is on a CJAA.
Did any of them do before & after dynos of the CAI itself? The only "numbers" I've ever seen have been on the CAI sellers' websites, and they've all been suspect for one reason or another.
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Old February 6th, 2012, 11:46   #13
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Hmm if the MAF is contaminated would that cause the hesitation ? because i bought this CPO at a dealer and when i put the intake on it seemed as if there was one on here at one point. It looked like there was a line drawn on the MAF which lined up perfectly with the one i installed. And yes i have it all back together and no cel. I don't have another mod besides the cat back that was one here when i bought it. I will reinstall the oem unit back on tonight. Someone told me about a flap in the bottom of the stock setup that i should hold open or closed with a bolt or something ever heard of this and why ?
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Old February 6th, 2012, 12:22   #14
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Did any of them do before & after dynos of the CAI itself? The only "numbers" I've ever seen have been on the CAI sellers' websites, and they've all been suspect for one reason or another.
no dynos, but one did VCDS logs of demanded air flow and actual air flow, and there was an improvment, was it worth the cash and do they filter the same? that's for them to comment.

Another member reported the CAI cut down on soot under "hard acceleration". Like I said their CAI wasn't their first mod.

Here's a discussion on tunes/mods and CAI, looks like not a whole lot of change with/without the intake except for spool up a smoke.

http://forums.tdiclub.com/showthread...&highlight=CAI
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Old February 7th, 2012, 09:29   #15
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Quote:
Originally Posted by powers0430 View Post
Okay i have a 2010 jetta 2.0t with about 15k miles on her. Love the car, my problem i am having is it seems a good bit more sluggish then my friends 09. what i mean is that when you punch the pedal on his it goes no real lag mine delays for a few seconds then pulls till about 3000 then stops also mine doesnt start to spool until about 1900 or so is this all normal? they are both 6spd manuals and stock beside a CAI.
The gear ratios are different on the 09 and the 10s. This might make the 10 feel more sluggish.
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