97 ITR Problems after high compression installs - Honda-Acura.net

rpm8500 · 09-18-09, 05:06 PM

Ok....here's the story...I have a 1997 ITR and just had the machine shop install JE 11:1 compression pistons with rods...also i had them machine the head for Skunk high compression valves, springs, and retainers...installed everything...the car starts but it backfires at idle...also it hesitates to rev but once it gets to 2000 rpm it doesnt backfire or hesitate to rev but once i release and immediately tap the accelerator it backfires...at times i had the rpms steady at 1500 it didnt backfire but i would hear a knock inside the engine and the rpms would drop and black smoke would come from exhaust...i have no stand alone ecm or upgraded injectors...please help...

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HatchVX · 09-18-09, 06:10 PM

Are you running a stock ECU? If you are im pretty sure that will be your problem. The computer is trying to run the car on a map not for that motor. Also have you check the timing to make sure it is good?

rpm8500 · 09-18-09, 06:18 PM

yes....running stock 97 ITR ECU...timing seems to be dead on...triple checked it...thank you...anymore advice on what I should check?

rpm8500 · 09-20-09, 10:09 PM

Any other suggestions other than HatchVX?....I checked the timing again and it was dead on....please help...thank you

Snoopy · 09-21-09, 10:38 AM

you need to get it tuned. you're gonna fuck that engine up if you continue the way you are.

IntegraType-R · 11-15-09, 11:29 PM

Stock ecu, is made for a stock motor

when will people stop being stupid..

good lord..

09-18-09, 06:10 PM	#2
HatchVX Driving a 2 liter tease Join Date: May 2002 Location: Stafford, VA Posts: 4,152	Are you running a stock ECU? If you are im pretty sure that will be your problem. The computer is trying to run the car on a map not for that motor. Also have you check the timing to make sure it is good? __________________ *93 DX civic with a* *2.0l GSR motor* *$300 left till my motor gets Tuned* PS3 Handle EGhatchtech (COD4)

09-18-09, 06:18 PM	#3
rpm8500 Junior Member Join Date: Jun 2007 Posts: 10	yes....running stock 97 ITR ECU...timing seems to be dead on...triple checked it...thank you...anymore advice on what I should check? Last edited by rpm8500; 09-19-09 at 12:41 AM.

09-21-09, 10:38 AM	#5
Snoopy sh!tbagging it up Join Date: Jun 2002 Location: the stumps/sactizzle, ca Posts: 29,118	you need to get it tuned. you're gonna fuck that engine up if you continue the way you are. __________________ war is young men dying and old men talking

11-15-09, 11:29 PM	#6
IntegraType-R ALL MOTOR KING Join Date: Aug 2004 Location: Baton Rouge, Louisiana Posts: 369	Stock ecu, is made for a stock motor when will people stop being stupid.. good lord.. __________________ InnovativeMotorWorks \|DFE Enterprises \|Rocket MotorSports\|cccylinderheads.com eCtune PRO,NeptuneRTP & CromePRO Tuner / Supporter - Contact me for details.

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09-20-09, 10:09 PM	#4
rpm8500 Junior Member Join Date: Jun 2007 Posts: 10	Any other suggestions other than HatchVX?....I checked the timing again and it was dead on....please help...thank you