Club Scion tC

Car Candy Motor Sports
Guest Menu
Scion News
Scion Generation
Scion tC Parts
Aftermarket Scion tC speed shop carries Scion tC exhaust, Scion tC intakes and more Scion tC parts at ScionGeneration.com
Club Scion tC Decals

Show your support for the club and sport some Club Scion tC premium decals on your Scion tC.

Get them now for only $5 shipped! Available in either vinyl or static cling.

Forum Options
Register | Login
Advanced
Viewing Thread
Home > Performance Mods > Intakes > rough after intake

rough after intake

Related threads: ( Click here to view )
flintmica08
Ohio, US
  • Detailer
 I installed an Injen intake recently and got out of my car to get the mail the past few days and noticed the exhaust is almost "puttering" I guess. Just seems like it's not running smoothe. Any thoughts or suggestions?

[#] Jan 09, 2008 09:35pm
speedintc
Dover
Delaware, US
  • Oil Changer
 maybe the o2 sensor position isnt right. i made my own intake and wen i was messin wit the 02 sensor position it would make the idle rough. but thats the only thing i can think of.

speedintc
[#] Jan 09, 2008 09:43pm
Vicious
Orlando
Florida, US
  • El Chupacabra
 o2 sensor? I think you mean the MAF, check to see if the MAF is connected properly. But as long as you don't have a CEL I don't think the puttering should be a problem o_O




The Thread Killah
[#] Jan 09, 2008 09:46pm
flintmica08
Ohio, US
  • Detailer
 It's weird though...sometimes it will putter like that and other times it seems fine. Also at random times it will struggle to start too. I only have 2000 miles on the car so I don't know what else could be wrong at this point. I'll check the MAF though

[#] Jan 09, 2008 09:49pm
scionteecee
Fairfax
Virginia, US
  • Chief Mechanic
 make sure the maf is screwed on real tight. i notice the struggle to start sometimes.

[#] Jan 09, 2008 09:53pm
flintmica08
Ohio, US
  • Detailer
 Thats what I keep reading....I'll check it out. Hopefully that fixes it. Thanks.

[#] Jan 09, 2008 09:56pm
andino
Manhattan Beach
California, US
  • Godlike Advisor
 did you reset your ecu? you'll also need to let it idle for like 5 or so mins after that reset. then drive it nice and easy for 15 miles. then it should be good to go





Are you in SoCal? Come to our CStC meets!
Located in Socal? Need something Installed?
Have a question and no one is willing to help? Shoot me a PM or hit me up on AIM.
[#] Jan 10, 2008 12:52am
skunk
New York, US
  • Godlike Advisor
 i had the same noise on stock exhaust wit the intake. i think ur able to hear the stock exhaust "putter" a lil more. its just a real quiet sound from the exhaust. i think its normal tho



The Skunk tC
Fo shiggity my niggity
[#] Jan 10, 2008 12:53am
Need4Speed305
Florida, US
  • Detailer
 i would say check to make sure its on tight with no air leaking cause mine did the same..yes and reset your ECU

[#] Jan 10, 2008 03:14am
flintmica08
Ohio, US
  • Detailer
 yeah it's not a really loud "putter" just sounds rough. I disconected the battery while installing... that rest the ECU right? And I did let it idle for a couple minutes
[#] Jan 10, 2008 05:20pm
Orin
Auburn
Alabama, US
make sure all your clamps for the connections are secure on the pipe and double check the MAF sensor. Be sure and visually inspect the seal and clamps around the throttle body to be nice and tight.

the only air coming in should be though the filter and not via loose connections.

[#] Jan 10, 2008 05:31pm
08FastTC
North Carolina, US
  • Tire Changer
 If Intake is installed correctly and Mass air flow sensor is connected there shouldn't be an issue. Yes that should have reset your ecu. I notice it sometimes but pay little attention to it. Mods always change little sounds and create others from the car. Should be normal. On a nother note did the Injen CAI fit well? did the boots and clamps work? I had to change out both clamps and am still looking to change out the boots. I have a faint wistle from intake Everything is tight and connected from the actual filter through both other connections and to the throttle body. theres a leak somewhere just cant find it.

[#] Jan 10, 2008 05:31pm
flintmica08
Ohio, US
  • Detailer
 no problems that I can see. Everything seemed to fit perfect actually. ONly problem I has was keeping the rubber strip that protects the intake from scraping kept falling off. I put a little dab of glue on it and its held so far.

[#] Jan 10, 2008 05:36pm
Orin
Auburn
Alabama, US
^the throttle body's butterfly designed valve does make a hissing or whistle sound when partially open. This noise is even louder on an aftermarket intake because of harmonics via the pipe.

Good advice though, just as mentioned above, double check all connections

[#] Jan 10, 2008 05:37pm
Orin
Auburn
Alabama, US
now that I think back after installing the Injen, the car felt rough during aggressive acceleration due to vibrations from the intake. Especially around 3500 rpm.

Any small putter from the exhaust could be unburned fuel due to the ECU continuing to adjust to conditions and learning. ECU is always adjusting air fuel mixtures in real time

[#] Jan 10, 2008 05:43pm
flintmica08
Ohio, US
  • Detailer
 makes sense...is their anything else I can do beside tightening up? Its pretty tight so I don't know what else to try. if I install header and exhaust would it change??
[#] Jan 10, 2008 06:40pm
scionteecee
Fairfax
Virginia, US
  • Chief Mechanic
flintmica08 wrote:
makes sense...is their anything else I can do beside tightening up? Its pretty tight so I don't know what else to try. if I install header and exhaust would it change??
u shouldnt really have anything to worry about as long as no cel
[#] Jan 10, 2008 07:48pm
flintmica08
Ohio, US
  • Detailer
 works for me...

[#] Jan 10, 2008 08:57pm

TOP: Home > Performance Mods > Intakes > rough after intake



Quick Nav:
©2008 Club Scion tC - Community for Scion tC enthusiasts.