Question about Turbos, Nitrous, Superchargers for Acura NSX

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Acura 2000 with Comptech Supercharger Installed. I got 9000 miles on the supercharger, only normal driving. Engine starts at 700RPM then peak to 1500RPM and then shut down. Engine light came on, tested with OBDII Diagnostic Tool with code 0106 (MAP/BARO voltage range). Checked the MAP sensor it was normal and the ESM (Engine Signal Modifier) is within range as suggested by the supercharger manufacturer. Clear trouble code and restarted the engine. It went from 700RPM to 1000RPM with hesitation and then shut down with engine light on. Could it be supercharger internal failure or there was not enough air for combustion? I smell fuel in the engine compartment but shows no sign of fuel leakage. Please help. Thanks, Chris

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  • christrinh_3 Apr 06, 2011

    I had this supercharger installed by a technician at an Acura dealership who is specialize in Acura NSX.
    I'm sure everything is tight. I did check the supercharger, vaccuum hoses, wiring, air intake manifold, air box and the plumbing. I found nothing that is out of place. The only suspect is the E.S.M. (Engine Signal Modifier) which is installed with the supercharger. I've already ordered a new E.S.M. from ct-engineering. You can find more about the E.S.M. and what it does by going to the website given below.

    The Comptech Supercharger doesn't have a blower, it's more like a screw type which is driven by the alternator belt. You can get more of an idea by going to and you'll see what I meant. They have the cut away view of the supercharger which is exact identical to mine. I will keep you post it as I further my investigation.




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It can be the no air issue causing this.The superchargers which have blades which blows the air into the intake manifold driven belt to the engine belt.The pressure in the intake manifold is not as per required so its causing the problem. Reseat all your Sensors, Reset the ECU, and try again.Let it idle for about 5-10mins. Also re check that manifold is properly torqued down.--------------- Did you put locktite on the bolt that secures the bracket to the manifold.
If not, you could have a leak around that bolt.------- Also check for dirt in
intake passages.Mainly the air-box beneath the air filter. I have seen squirrels and rodents pack **** in them. I've found acorns, dog food and home insulation. All of them set a Baro DTC. The trouble shooting is to check for blocked air intake, if there is no blockage, replace the ECM. The Baro sensor is located INSIDE the ECM. Also check the bypass valve. If it's not working properly or it;s restricted in some way it will cause over-boosting. Also check the cable to the map sensor. There are others users , in that cases manifold got too hot and burned a hole through the wiring and the grounding is out of MAP. ----------- Check the pipings, and hoses that you dont got a boost leak.
When the car sounds louder then most other Superchargers at idle, that only means you got some air coming out in one of your hoses.
Could be a slight leak around your manifold and the head or where the blower bolts to the manifold.--------- Get this possibilities checked.this will point towards the faulty part, either a cracked hose or loose bolt or a small leak etc etc.This should help.Keep updated.Thanks.Helpmech.

Posted on Apr 06, 2011

  • raj somaiya Apr 06, 2011

    Yes that helped.Also keep updated with the result after replacing, E.S.M. (Engine Signal Modifier).This will help for further troubleshooting.Keep updated.Thanks.Helpmech.



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