Could you be a little more specific in your post please:
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Originally Posted by Rx-7fetish
Okay so im now a new proud owner of an 88 10th ann, it seems to run alright when sitting still but when driving it feels bogged out, it drove fine when the previous owner bought it, but it had a straight pipe.
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What RPM range does it seem to bod down in? Is it only noticeable after a specific RPM?
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He added a cat and im assuming its not a high temp and possibly burnt up and clogged itself, he drove it for 9 months before it started acting up.
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That may be a possibility, but if you have a picture of the cat we may be able to inform you of one way or another if it's stock or aftermarket. However I would more than likely just hollow it out and run it like that, unless of course you're attempting to pass emissions in which case, do you have an air pump to pump air into the cat?
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He never was hard on it, he never so much as did a burn out. It starts up easy.
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Which probably means there's an increase in carbon deposits in the motor. Remember: A redline a day keeps the carbon away.
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Also the boost gauge is unhooked, i cant for the life of me find a diagram or picture of how or where it hooks up.
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Check the FSM. There's a link to it both s4 and s5 in the rotor wiki linked in my sig.
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Also correct please if im wrong, this is my first turbo, i swear i read somewhere that it wont run right if the gauge is unhooked.
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I'm not so sure about that. Check to see if your MAP sensor is hooked up, if it's not then the problem is not the gauge but the sensor itself which is connected to the ECU. I would find it hard to believe that the stock setup would use a voltage reading from the MAP to the gauge and then run the possible risk of having a worse signal going to the ECU. So I highly doubt that is an accurate statement--Though I very well could be wrong in that assessment.
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Ask any and all questions that would help to narrow down on the problem. No i have not drove it long or far enough to see if it overheats but i was told it did not. I can post pics so just let me know what to take pics of and ill do my best to get them up.
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Honestly I'd do a full tune up. Change all fluids and inspect for wear on specific parts. Oil, Coolant, Seals, and lines. Maybe even replace all the vacuum hoses or at the very least inspect them. Consequently if you're not familiar with the car itself it helps tremendously to know what has been replaced on the car and what is not specifically on the car from a normal one. Beyond that welcome to the RCC.