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Old 06 Oct 2007, 04:57 pm
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Default '03 civic turbo kit. Engine mods needed?

I'm gonna get a turbo for my '03 civic. It says it comes set to 6 psi. If I increase the 6 psi or not, do I need to get anything other than colder spark plugs?
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Old 06 Oct 2007, 05:03 pm
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blow-off valveturbo timerwastegateintercoolerperformance exhaustAll from HKS
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Old 06 Oct 2007, 05:10 pm
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Yes you ABSOLUTLY NEED to get it tuned by a professional. I cannot stress how important that is. Make sure that you get the intercooler and always run 91-94 octane gas, and one heat range colder with the spark plugs. You will need at least a 2.5 - 2.75 exhaust, without it you'll have too much backpressure and your engine will be choking. Your also gonna need bigger injectors to compensate for that extra air that the engine is now getting. YOU DONT WANT TO RUN LEAN. It is a good idea to run slightly rich, you need bigger injectors. A fuel pump wouldnt be a bad idea but you can get away with your stock one for only 6-8 psi, anything more and your pushing it. The main thing and agian I CANT STRESS it enough is taking it to a GOOD TUNER and getting it tuned. ITS A MUST BY ALL MEANS. I can't tell you how many people I've seen blow engines because they didn't know what they were doing.
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Old 06 Oct 2007, 05:13 pm
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blow-off valveturbo timerwastegateintercoolerperformance exhaustLARGER PIPINGAIR FUEL RATIO GAUGE.MAKE SURE YOUR AIR FLOW IS VERY GOODDONT PUT IT OVER 12 PSI ON STOCK INTERNALS OR ELSE SAY BYE BYE TO UR ENGINE WITH IN 1-2 MONTHS.
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Old 06 Oct 2007, 05:16 pm
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i agree with all of the above. a stock bottom end is built pretty stout from the factory. if you plan on running high boost, at least put lower compression pistons in your bottom end, upgrade the rod bolts, have your rods shot peened, and upgrade the piston rings. its not cheap though, so expect a nice bill. if your planning on fairly low boost, ie: 6-10 psi. you shouldn't have to do very much, except for a fuel pressure regulator, and a better ignition system, like the msd sc.
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Old 06 Oct 2007, 05:18 pm
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6-10 pounds is low boost? Are you out of your mind? 6 pounds is a LOT for such a small engine, 10=detonation without a rebuild previous to the turbo install...
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Old 06 Oct 2007, 05:23 pm
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if you push past six you will need a few crucial things 1) A new intake manifold. The 01-05 civics with the D17 have plastic intake manifolds and if you push up the boost you have a chance of melting it. You can retrofit a D16y8 manifold (from the 96-00) civics to fit but its not a direct bolt on.2) a whole new tune...and dont' cheap out on this either spend as much as you can on it and get the best engine management you can. If you buy a kit and its only set for 6 psi leave it there unless you get a better tune for higher psi3) Again if you buy a kit and it doesn't include injectors and fuel pump then go out and get them if you plan to go over the set psi. You dont' want to starve your motor of fuel and lean out.Bottom line: if the kit you buy is set to 6 psi leave it there and dont get greedy with it or you'll end up with a blown motor. If you want to push the boost then you'll max out at around 12 psi on stock internals (with a really really good tune). Anything higher and you'll need new internals.Check out D-series.org, a guy there just used the Dezod V1 kit, a good tune, and put out 218 whp w/198 ft-lbs.
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