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Old 12 Apr 2010, 01:31 am
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Default Have 5k to drop on mods for 2010 civic si? what to do?

I have 5k, that i wanna throw in my civics engine, what can i do or buy, that will make it go faster, and how much hp can i gain. Also if you mention that i should turbo, explain the max psi i can push thru it, without it blowing, because ppl told me i cud do max 5psi for a civic engine? is it true?

engine swap? but my engine is brand new? my car has 1200 miles
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Old 12 Apr 2010, 01:46 am
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if you have that kind of money, i would give serious thought to do an engine swap.
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Old 12 Apr 2010, 02:01 am
Join Date: Jan 2010
Posts: 86

you will get better results with a turbo -- but if you are going to go for n/a on the civic, then go for high comp pistons, inlet, exhaust, throttle bodies, stage 2 cams and uprated valvesprings, header work and so on, breathing mods are great on VTEC engines...

but you will get better results on a money/bhp ratio with a good turbo setup (NOT an ebay turbo).

you should only run 5psi on stock internals for it to run safelty in the long term, but you can go on to upgrade to low comp pistons, better valvetrain, crankshaft, block/cylinder sleeving, head work and so on in order to boost up the PSI,

so if it were me i would go for turbo, just make sure you get a better/higher flow fuel pump and injectors to go with it, and get the ECU mapped to run it all properly
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Old 12 Apr 2010, 02:16 am
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Posts: 481

An engine swap is a stupid idea, honestly, as the 2006+ Civic Si has the best 4 cylinder they have ever made, power wise. I would either save the money and find a turbo setup, or spend the $5k on other, useful things, like suspension, wheels and tires, to make the car handle better. You can probably run 6-7psi fine on a good, efficient turbo with a good intercooler, but that's probably the max safely on a honda engine, because of the high compression. I would honestly follow the recommended boost pressure of the turbo kit manufacturer, as they've spent the research money on finding the limits and pay the engineers to figure those things out.
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