Installed K&n Cone Filter And Adapter, Now Runs Like Crap
#1
Full Member
Thread Starter
Join Date: Jan 2006
Location: DOWNINGTOWN, PA
Posts: 91
Likes: 0
Received 0 Likes
on
0 Posts
Installed K&n Cone Filter And Adapter, Now Runs Like Crap
88 gxl, car ran fine before, all was installed corrrect, installed a conicical filter, and maf adapter, now there is a high rpm miss i think, power seemed great till like 6000 rpm, then went flat.
any input would be great
is there less cold air now that vent duct over radiator is not hooked up?
any input would be great
is there less cold air now that vent duct over radiator is not hooked up?
#2
Infinite Rotary Resolve
iTrader: (1)
Join Date: Jul 2003
Location: Nashville, TN
Posts: 1,042
Likes: 0
Received 0 Likes
on
0 Posts
more air flow, probably hotter air...
is the AFM level? the flapper should move parallel with the ground so that gravity won't pull the door open or closed (even if just a little) so they say on the forums
is the AFM level? the flapper should move parallel with the ground so that gravity won't pull the door open or closed (even if just a little) so they say on the forums
#4
Bongolio
88 gxl, car ran fine before, all was installed corrrect, installed a conicical filter, and maf adapter, now there is a high rpm miss i think, power seemed great till like 6000 rpm, then went flat.
any input would be great
is there less cold air now that vent duct over radiator is not hooked up?
any input would be great
is there less cold air now that vent duct over radiator is not hooked up?
#6
Full Member
Thread Starter
Join Date: Jan 2006
Location: DOWNINGTOWN, PA
Posts: 91
Likes: 0
Received 0 Likes
on
0 Posts
Trending Topics
#9
Lets rock.
Join Date: Apr 2004
Location: SLC, Utah
Posts: 1,355
Likes: 0
Received 0 Likes
on
0 Posts
Someone told me a while back that your car will run lean after installing intake and exhaust. You should try some TII injectors for secondaries or maybe a new fuel pump. I had the same issue but in your case it could be anything, like a bad O2 sensor perhaps.
#11
HSV...i just ATE one
Join Date: Sep 2007
Location: perth,Western Australia
Posts: 42
Likes: 0
Received 0 Likes
on
0 Posts
get it dynoed asap...intake and exhaust mods can make the car leaner or richer...and it would probably help if the filter was not exposed to hot air...hotter intake air = less power
#16
Uh, no. I am running Stock Injectors and Fuel pump each with over 300k miles with Street Headers, Street Port and 2.5" Exhasut 6 ports wired open, no airbox with open filter like K&N. My air fuel on a Dyno are dead on and dyno ~160hp to the wheels.
#17
Full Member
Thread Starter
Join Date: Jan 2006
Location: DOWNINGTOWN, PA
Posts: 91
Likes: 0
Received 0 Likes
on
0 Posts
i have not replaced fuel filter yet, might help, car was on a 1/8th tank, would that kill me?
but car always ran rich, and ran strong before a stupid cone filter
............i was talking about the k&n thats a factory square filter, thats called a drop in, instead of the cone filter...........
but car always ran rich, and ran strong before a stupid cone filter
............i was talking about the k&n thats a factory square filter, thats called a drop in, instead of the cone filter...........
#18
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 109 Likes
on
92 Posts
A simple troubleshooting step would be to remove the K&N filter and see if the car improves. If so, then the issue is with the filter.
What was done with the air pump line that would normally be connected to the airbox?
#19
Bongolio
Seriously i ran the K&N filter on my 87 GXL for about 2 years with no problem's and telling this guy to dyno his car and to upgrade his injector's is just ridiculous!
#21
Rotorhead
Join Date: Feb 2001
Location: Charlottesville, Virginia, USA
Posts: 9,136
Likes: 0
Received 39 Likes
on
33 Posts
2. Unscrew the screws on the stock air box.
3. Remove the cover of the stock air box.
4. Remove the old air filter.
5. Install the K&N air filter.
6. Replace the cover of the stock air box.
7. Install the air box screws.
8. Nominate Evil Aviator for a Nobel Peace Prize for writing this complicated and innovative process.
#22
Full Member
Thread Starter
Join Date: Jan 2006
Location: DOWNINGTOWN, PA
Posts: 91
Likes: 0
Received 0 Likes
on
0 Posts
i left the hose off to the air pump, since i have no cats and air pump is disconnected for now.
i made 2 brackets, leveled the maf out, full tank of gas, and made a air scoop to the filter based off the oem scoop over the radiator.
we will see what happens
i made 2 brackets, leveled the maf out, full tank of gas, and made a air scoop to the filter based off the oem scoop over the radiator.
we will see what happens
There's no reason to upgrade the fuel system, and there's no reason to spend $100 an hour to book a dyno on a car where there is no way to tune the fuel curve.
A simple troubleshooting step would be to remove the K&N filter and see if the car improves. If so, then the issue is with the filter.
What was done with the air pump line that would normally be connected to the airbox?
A simple troubleshooting step would be to remove the K&N filter and see if the car improves. If so, then the issue is with the filter.
What was done with the air pump line that would normally be connected to the airbox?
#24
Full Member
Thread Starter
Join Date: Jan 2006
Location: DOWNINGTOWN, PA
Posts: 91
Likes: 0
Received 0 Likes
on
0 Posts
just got back, ran strong, no miss/flatness, very responsive
makes a sloppy air sucking noise at low rpm though.....i can only hear it with windows open
this is my first mass air car, so that may be it, may be the air flyin past the vane
makes a sloppy air sucking noise at low rpm though.....i can only hear it with windows open
this is my first mass air car, so that may be it, may be the air flyin past the vane