DEPRESSED!!! 221WHP with SUPERCHARGER!!!???!!!
#201
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You can run the IMRC connected with the standard boost pulley but the way Scalbert explained this to me is that once positive pressure is introduced into the manifold the benefits of the resonance is no longer a factor, especially if you are getting knock.
![2 Cents](https://acurazine.com/forums/images/smilies/2cents.gif)
#202
Senior Moderator
I would fix the misfire first. I would replace 1 coil pack and work my way around with taht one to see if you can eliminate the misfire. Then i would install the SC
#205
THE J35A2...
Originally Posted by CL FWD SPEED
can you check to see if the coils are bad by an ohm-meter or something??
if you feel the engine surge as if it's gonna die that means the one you undo is OK, now, when you unplug the bad one the idle will stay the same, take that coil out and change it...
#206
4drs just wanna have fun!
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Originally Posted by mrsteve
o rly?
He's running more than the HBP![Wink](https://acurazine.com/forums/images/smilies/wink.gif)
What's that ^ then?![Scratch](https://acurazine.com/forums/images/smilies/scratch.gif)
He's running more than the HBP
![Wink](https://acurazine.com/forums/images/smilies/wink.gif)
What's that ^ then?
![Scratch](https://acurazine.com/forums/images/smilies/scratch.gif)
Even Siggy as you quoted was refering to the original posters query.
Let me ask you this then since you believe the IMRC is so bad. What are the chances of the car detonating with the HBP application with the IMRC both always closed and always open?
The comparison im trying to draw should demonstate that the transition is the only troubling part to tuning, once done correctly you should not have any problems tuning the rest.
Even I NA have problems with my IMRC transition due to my tune but that because I tuned my car with it open the whole time and after whne I got it working on my swap the transition is still not smooth and if I seafoam my car it will misfire slightly around 3800rpm.
#207
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There is detonation with the IMRC connected when using more than the standard boost pulley; sometimes even with the standard boost pulley. Tests have shown the the horsepower and torque difference between having the IMRC connected vs. disconnected with just the supercharger kit and HBP is limited to 1-2% and it isn't consistant; some areas w/o the IMRC functions better than w/ the IMRC.
Key difference is you make the same amount of power without the knock.
Key difference is you make the same amount of power without the knock.
![](http://www.flwse.com/images/steve/Dyno/Brad/imrc_dyno.jpg)
#208
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For the resonance effect to occur within the manifold you need ambient pressure within the manifold and relies upon vacuum and/or the pulse of air.
Once you introduce positive pressure into the manifold the resonance effect created by the runners is greatly diminished especially on a supercharged car since the flow is a fixed rate. On a turbo car it would react differently.
Once you introduce positive pressure into the manifold the resonance effect created by the runners is greatly diminished especially on a supercharged car since the flow is a fixed rate. On a turbo car it would react differently.
#209
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I am having knock at around 4500rpm and up by 6900rpm. my imrc is connected right now.
but i need to figure out why i am getting misfire codes p0300 and p1399 aswell as each invdividual cylinder. its amazing how well the cars runs right after i erase the codes. but withing a matter of minutes, the power loss is substanstial.
need to find cause of misfire.
but i need to figure out why i am getting misfire codes p0300 and p1399 aswell as each invdividual cylinder. its amazing how well the cars runs right after i erase the codes. but withing a matter of minutes, the power loss is substanstial.
need to find cause of misfire.
#210
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Originally Posted by SIRSIG
or you can unplug the connections while the engine is running. do it one at a time.
if you feel the engine surge as if it's gonna die that means the one you undo is OK, now, when you unplug the bad one the idle will stay the same, take that coil out and change it...
if you feel the engine surge as if it's gonna die that means the one you undo is OK, now, when you unplug the bad one the idle will stay the same, take that coil out and change it...
#211
Senior Moderator
Originally Posted by New Image
I am having knock at around 4500rpm and up by 6900rpm. my imrc is connected right now.
but i need to figure out why i am getting misfire codes p0300 and p1399 aswell as each invdividual cylinder. its amazing how well the cars runs right after i erase the codes. but withing a matter of minutes, the power loss is substanstial.
need to find cause of misfire.
but i need to figure out why i am getting misfire codes p0300 and p1399 aswell as each invdividual cylinder. its amazing how well the cars runs right after i erase the codes. but withing a matter of minutes, the power loss is substanstial.
need to find cause of misfire.
#212
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last nite it threw a code for cylinder 1 only. then it spread. so i dunno.
so it can be a bad coil but not bad enuff to check by removing it? that would make sense, cuz i checked each individual coil and got nothing, but if its bad enuff only to cause misfire, then that makes sense.
so it can be a bad coil but not bad enuff to check by removing it? that would make sense, cuz i checked each individual coil and got nothing, but if its bad enuff only to cause misfire, then that makes sense.
#217
Racer
Instead of wasting time jerkin' with the cat... Check your coils. Follow the instructions mentioned above for checking a bad coil. Personally, I would replace them all, and call it a day.
Then go get a scan tool, or go to Autozone and have them attach a scan tool to the car.
Then go get a scan tool, or go to Autozone and have them attach a scan tool to the car.
#219
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this is the reason why i thought it could be a cat is thru searching:
http://www.acura-cl.com/forums/showt...ighlight=p0300
http://www.acura-cl.com/forums/showt...ighlight=p0300
#220
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Originally Posted by mrsteve
![Werd](https://acurazine.com/forums/images/smilies/werd.gif)
I don't know why people always assume there's something wrong with the cat.
Did you get that scan tool yet?
i have a scan tool, but not the one that reads sensor values. yet to get my hands on the other one
#224
Senior Moderator
Originally Posted by New Image
last nite it threw a code for cylinder 1 only. then it spread. so i dunno.
so it can be a bad coil but not bad enuff to check by removing it? that would make sense, cuz i checked each individual coil and got nothing, but if its bad enuff only to cause misfire, then that makes sense.
so it can be a bad coil but not bad enuff to check by removing it? that would make sense, cuz i checked each individual coil and got nothing, but if its bad enuff only to cause misfire, then that makes sense.
#226
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Originally Posted by mrsteve
There is detonation with the IMRC connected when using more than the standard boost pulley; sometimes even with the standard boost pulley. Tests have shown the the horsepower and torque difference between having the IMRC connected vs. disconnected with just the supercharger kit and HBP is limited to 1-2% and it isn't consistant; some areas w/o the IMRC functions better than w/ the IMRC.
Key difference is you make the same amount of power without the knock.
![](http://www.flwse.com/images/steve/Dyno/Brad/imrc_dyno.jpg)
Key difference is you make the same amount of power without the knock.
![](http://www.flwse.com/images/steve/Dyno/Brad/imrc_dyno.jpg)
Is it just me or does the dyno graph show the power of an NA TLS? Pretty crappy numbers for a SCed TLS if you ask me. I've seen a TLS make over 250whp NA!?
Not arguing to keep the IMRC open for more power except when under vacuum and off boost during crusing, I figure if you can tune the car with the IMRC safely then its a win-win siuation.
So I guess to get around this most people leave the IMRC valve closed by disconnecting it and preventing it from opening keeping their NA off boost efficiency and creating a safer more practical tune, altough why that is the case still eludes me.
#230
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on cylinder 4 when i disconnect the coil, the surge isnt as noticable like the other cylinders. hmmm. even tho i replaced it?
could it be in the harness?
could it be in the harness?
#235
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my headers are now in. my aem eugo is also in. my a/f is a flat 10~11.2 throughout the power band.
i am still getting misfires, but now only in cylinders 1,3,4,5,6. wierd why cylinder 2 stopped misfiring?
i am running pretty rich, and am thinking perhaps the densos are fouled out. ill order new ones and see what happens. other than that i am stumped as to why i am misfiring.
the only thing i havent checked yet are the injectors, but i dont see why it would be that.
i am still getting misfires, but now only in cylinders 1,3,4,5,6. wierd why cylinder 2 stopped misfiring?
i am running pretty rich, and am thinking perhaps the densos are fouled out. ill order new ones and see what happens. other than that i am stumped as to why i am misfiring.
the only thing i havent checked yet are the injectors, but i dont see why it would be that.