Notices
Performance Forced induction, intakes, exhausts, torque converters, transmissions, etc.

injen intake and correlation with dash lights

Thread Tools
 
Search this Thread
 
Old May 26, 2007 | 12:43 AM
  #1  
olddog's Avatar
olddog
Thread Starter
Pole Position
iTrader: (2)
 
Joined: Sep 2005
Posts: 2,014
Likes: 1
From: ON, Canada
Default injen intake and correlation with dash lights

am getting this for my 98 gs300 from a fellow member.
i researched it on CL and noted that most complained that it set off their dash lights(VSC, CEL , check engine etc).
is it because they did not reset their ECU upon installing their intake or is this a definitie occurance bound to happen upon installing an injen intake.
i don't want to get this and "hope" it doesn't set off the lights. i don't want any trial by error mod.
so please advise on this injen intake. i would rather stick with stock than fight the dashlight set-off.
thanks
olddog
Reply
Old May 26, 2007 | 05:51 PM
  #2  
mex lex's Avatar
mex lex
Lexus Champion
iTrader: (4)
 
Joined: Dec 2006
Posts: 3,214
Likes: 2
From: Kyoei USA
Default

i think only the first ones did. injen came out with the second and even third version but i am not sure. just look for the latest version and you should be alright.
Reply
Old May 27, 2007 | 03:12 PM
  #3  
GSteg's Avatar
GSteg
Rookie
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (15)
 
Joined: Jul 2005
Posts: 16,018
Likes: 81
From: CA
Default

Did you know what injen did to the versions after the first? All I could think of is that they used a bit more restrictive filter because the original one was registering a 'lean' code.
Reply
Old May 27, 2007 | 07:26 PM
  #4  
macd7919's Avatar
macd7919
Lexus Champion
iTrader: (10)
 
Joined: Jun 2004
Posts: 2,539
Likes: 5
From: MD/WA
Default

It's because there is no fuel compensation for the increased airflow. Whats the point of having a high flow intake with a restrictive filter on it? Point being, if you are going to do an intake YOU HAVE TO HAVE FUEL COMPENSATION!!!!
Reply
Old May 27, 2007 | 11:34 PM
  #5  
JeffTsai's Avatar
JeffTsai
Lexus Fanatic
iTrader: (1)
 
Joined: Aug 2005
Posts: 5,392
Likes: 44
From: DFW area TX
Default

Actually the biggest problem is the piping diameter mismatch. It's what causes most of the CEL's on aftermarket intakes on cars with a MAF type air metering system. The stock intake pipe is 2.25" or 2.5" diameter. Most of the aftermarket intakes have a 3" piping. Bigger piping = less air velocity for the same amount of air flowed. Thus, the MAF metering system tuned for the stock piping diameter will register less air flowing thru the intake pipe while in reality there is more. You need an SAFC or some type of MAF signal modifier to correct for the difference in airflow.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Katin2
Performance
13
Mar 28, 2010 12:19 AM
Bullskim
Performance
4
May 31, 2008 11:14 AM
Bigwun07
Performance
3
Mar 21, 2008 06:50 PM
mex lex
Performance
2
Jan 5, 2007 06:07 AM
Aristov3o0
GS - 2nd Gen (1998-2005)
8
May 22, 2001 07:45 PM




All times are GMT -7. The time now is 03:11 AM.