Feels a little sluggish
Thread Starter
Cruising
Joined: Oct 2011
Posts: 10
Likes: 0
From: Cape Coral FL
Feels a little sluggish
Just installed a K&N system on the car, only other mods are Xpipe and cat back exhaust. Theres a little hesitation at low rpm when taking off, would it have anything to do with removing the screen on the air sensor?
Thanks in advance for any suggestions
Thanks in advance for any suggestions
Racer
Joined: Aug 2011
Posts: 279
Likes: 0
From: MN
Keep in mind that you just introduced quite a bit more air if it is a coupe. The computer now wants to add MORE fuel than it was already getting (come from factory running semi-rich) to get that A/F ratio back to 14.7.
Your factory tune is not made to run with that extra bit of fuel which can be why you would are getting that sluggish feel as it dumps even more fuel into a stock tune. It may go away after a few hundred miles of driving as the ECM re-maps the fuel tables with that extra air coming in.
Despite any claims or what anyone says, you will NEVER see the full advantage of a bolt-on without doing a tune to compensate for it. Just plan on doing a tune especially if you add more bolt-ons. Last thing you want is for the ECM to keep increasing fuel to compensate for the extra air and then start washing you cylinder walls if you add more than just the air intake.
Your factory tune is not made to run with that extra bit of fuel which can be why you would are getting that sluggish feel as it dumps even more fuel into a stock tune. It may go away after a few hundred miles of driving as the ECM re-maps the fuel tables with that extra air coming in.
Despite any claims or what anyone says, you will NEVER see the full advantage of a bolt-on without doing a tune to compensate for it. Just plan on doing a tune especially if you add more bolt-ons. Last thing you want is for the ECM to keep increasing fuel to compensate for the extra air and then start washing you cylinder walls if you add more than just the air intake.
Drifting
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
To the OP, check the obvious and simple things first before you start spending money on tuning: air ducting and plumbing properly installed, filter is not over oiled leading to oil cary-over into the MAF, connectors properly seated with clean terminals, check the MAF for any obvious damage that may have opcured as a result of removing the screen.
Additionally, if you have a scantool with real time data capability, you can view your MAF output signal while the vehicle is operating and compare it to the range of values determined by the OEM for a properly operating sensor.
Last edited by ipuig; Oct 9, 2011 at 08:40 AM.
Thread Starter
Cruising
Joined: Oct 2011
Posts: 10
Likes: 0
From: Cape Coral FL
I was able to re-install the screen, it doesn't hesitate anymore. Couple of question, what and how much would I gain by adding an aftermarket MAF? Should I have someone re-tune the car due to the mods I've done.
Racer
Joined: Aug 2011
Posts: 279
Likes: 0
From: MN
It is a big waste unless you have a large amount of other mods to deem it necessary, such as a heads and cam package to go along with that intake you have now.
Last edited by Qweklain; Oct 9, 2011 at 10:44 PM.
