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I have upgraded the exhaust, header, air intake with hood scoop for cold air, ECU and I think I'm running low 15's which is nothing to brag about but it's decent. You can also do the cams but they can get pricey and are hard to find for a ZC. I would suggest if anything go Turbo. I wouldn't...

I preffer stock wires myself. Stock wires have good insulation, therefore, keep away interference and noise.

If you are not going to spend money and get decent coilovers, I would suggest that you get lowering springs instead.

I assume your Integra ECU is a PG7. I have an 89 Integra PG7 in my CRX with my ZC engine. I wouldn't put back the SI PM6, because the Integra ECU has more aggressive timing and fuel maps. It will simply work better with the ZC engine. If anyhing, I would love to get my hands on PM7 ECU...

I would stick with stock wires. Even though stock wires don't have as low resistance as let's say MSD. They got better insulation which will keep away noise interference away from the computer system. Most high performance wires are low resistance, but create interference. If your vehicle...

The more air and fuel you create into your engine the greater combustion, therefore, more horsepower. In order for Venom 400 to function efficiently it would be recommended to upgrade air intake system. If you are shoving more gas into the engine but there isn't enough air, tha gains are going...

I have a Venom 400 in my 91 CRX. Definitely a noticable difference. I would recommend it. If you want to save some money, a lot of people disconnect their IAT Sensor which is located on the intake manifold and short it out with a resistor. This changes the resistance value to the ECU which...

I've got a PG7 from 89 Integra 5 Speed manual with my ZC in 91 CRX. The ECU performs great. You could also use a PM6, which comes out of 88-91 CRX SI. I would recommend PG7 or even better PM7 which is actually used originally with the ZC motor. PM7 ECU's are costly and hard to find. You...

Has anyone had Eibach Pro Kit on their car. I could use feedback. I installed sleeve coilovers on my CRX with Koni Reds, I don't like the ride at all. I'm looking into getting Eibach lowering springs.

I have a DC Sport header with Borla exhaust on my ZC 91 CRX. Don't do it, it's stupid loud. My neighbours hate me.

Get the test pipe and get rid of the Catalyc Converter. You will notice a little bit of difference in gas mileage and power as well.

Does anybody know how to properly adjust the TPS sensor once new one is installed? I have problems with idling on my 91 CRX with ZC engine. I just got a new TPS sensor I want to try it out. Any help would be great.

I swapped a ZC engine into 91 CRX SI and I've been having idle problems ever since. Somebody mentioned to me that throttle cable might need to be modified because it might be too long. I also find that my gas pedal doesn't come all the way back when released. The car idles at around 1200rpm...

I installed these in my 91 CRX. I was very impressed. It took me about 2 hours. All you need to do is support your engine from the bottom, and pull one mount at a time off. Insert the mounts. Put them back on. No special tools required.

No matter how I set the coilovers, the car still pulls to the right. I tried checking my bearing for play, the wheel seems pretty tight. Or would I require extreme force to test the bearing. I'm stuck.

Does anyone know the proper way to adjust coilover system on a 91 CRX? Do I need to adjust them so that height equals the same between all four wheels from fender lip to ground. Or do I need to make sure that threaded setting on coilover sleeve is adjusted equally between all four wheels...

I've just installed a set of coilovers with my Koni shocks, replaced both of my tie rods, adjusted the ride height equally, got a proper wheel alignment, and my car pulls to the right everytime I step on the gas. I checked everything, it all seems to be tight and solid. I also noticed that to...

You should be able to adjust your camber setting to proper spec without the camber kit if you've only lowered your car 2 inches.

If you are thinking of lowering your car up to 2 inches you should be able to get away without needing camber kit. If you lower it over 2 inches than most likely you will need the camber kit for front and rear. Don't forget that once you align your wheels at desired height, even though you...

I'd go with 400 in front and 350 in back. Front should be stiffer due to engine weight. I'd personally go with Koni's over anything else. They are quite expensive, but worth it in the long run.