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Old June 21st, 2004, 12:47 AM   #1
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how do modify a engine whithout adding a Turbo ?

can you guys give me some idea how to modify a 2004 Accord V6 coupe engine without putting a turbo and supercharge
and i already got a exhaust, intake, and i am curious how much power increase i will get from those ?
what else can i get
how about throttle body, catalyst converter and down pipe ?
thanks you your avdice
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Old June 21st, 2004, 01:44 AM   #2
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hello. well, there are many ways to upgrade. however, i have a 6th gen (98-02) so i dont know exactly whats out there. but usually anything that channels air in-out of the engine will give you some hp boost. who knows how much, as its different with every car, but there is some. changing/removing your stock cat conv is illegal in cali, i dont know about texas, but in cali, removing your cat conv almost always makes you unable to pass smog. a bigger throttle body increases air flow to your engine, which should increase horsepower, and your downpipe will decrease the amount of resistance your exhaust experiences, creating some more hp. other routes of increasing hp? Cams, Pistons, Pullies, basically after i/h/e you usually have to go internals to get more hp. which can get expensive. also you can have machinining done on your engine as well. but that gets real expensive and some machine shops will tell you that their services make your car street-illegal by modifying the engine and arent responsible. also, look into tuning components, like an Apex-i VAFC, or perhaps, if youre really rich, a AEM EMS. And i think thats just about it. forgive me if im wrong, its late and im kinda tired. hope i could be of help.

peace
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Old June 21st, 2004, 02:40 AM   #3
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well.. nothing much you can do now.. since you already got intake and exhaust.. wanna tell us which one you got?

downpipe and pulley is what everyone is waiting for.. but no official word from any shop yet.. Unichip is being tested, just drop off my car today.. so you guys can have some fun with it very soon....

no actual r&d being done about cam or piston... had discussions done but most said our engine prob don't need such mod (as it is as good as it gets for now) and no one knows what kinda gain to expect as well..

that's it for now..
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Old June 21st, 2004, 07:42 AM   #4
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why was this posted in the "show mods" section?

BTW, 10.0:1 compression is pretty normal these days. You could crank it up to 11.0-11.5:1 with aftermarket custom pistons for a street application, or to maybe 12.0:1 or higher for track use only. You'd need standalone engine management also. And the cams are still gonna be mild street cams for emissions. No factory cam is really aggressive these days (compared to the musclecar era) due to all of the fuel mileage and emissions regulations.
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Old June 21st, 2004, 03:30 PM   #5
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thanks for the tips
how about Greddy E-manage ? and i saw the other thread. need to bring to dyno in order to get correct setup ?
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Old June 21st, 2004, 09:42 PM   #6
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actually steve some of those old mucle car grinds were pathetic. Most were smaller then the stock 6th gen in VTEC [which is 215/[email protected] .050]

Anyways the 7th gen uses the best cams avalible from honda going by the specs we do have. You could always bump up displacment with a 3.2/3.5 shortblock swap, or stroke your motor to a 3.2. You could mill the deck and heads to up the compression without changing anything else. NOS is always out there, as are professinal head porters. You could fabricate a crank scraper to reduce windage in the crank case, you could have the stock cam re-ground to new specs. Theres lots of options, you just have to think like a domestic guy and not a import bolt on guy
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Old June 21st, 2004, 11:02 PM   #7
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Quote:
Originally posted by ferrari0266 on June 21st, 2004 at 02:30 PM

thanks for the tips
how about Greddy E-manage ? and i saw the other thread. need to bring to dyno in order to get correct setup ?
Just one guy did the greddy e-manage.. (sorry, forgot the name..) and he reported good result..

but just with any piggyback ecu, ecu replacement, or even vafc.. you should always bring your car in to get dyno tuned..
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Old June 21st, 2004, 11:05 PM   #8
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Quote:
Originally posted by bored&stroked on June 21st, 2004 at 08:42 PM


Theres lots of options, you just have to think like a domestic guy and not a import bolt on guy
<--- import kinda bolt-on guy.. until I can really understand all these piston, cam, displacement stuffs.....
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Old June 21st, 2004, 11:07 PM   #9
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Quote:
Originally posted by brex
Just one guy did the greddy e-manage.. (sorry, forgot the name..) and he reported good result..

but just with any piggyback ecu, ecu replacement, or even vafc.. you should always bring your car in to get dyno tuned..
so what E-manage harness would i need ? all or just some ?
thanks
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Old June 21st, 2004, 11:36 PM   #10
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Quote:
Originally posted by ferrari0266 on June 21st, 2004 at 10:07 PM

so what E-manage harness would i need ? all or just some ?
thanks
Sorry.. no idea..

I will say go with Unichip....
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Old June 21st, 2004, 11:39 PM   #11
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To brex : hey, you got a cool accord
how did you install the MOMO handbrake and the boot ?
and how does the neon work ? light when you turn on headlight ?
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