i need suggestions for my si - HondaCivicForum.com


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Old 03-27-2014, 09:24 PM
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Exclamation i need suggestions for my si

hey so i just bought a 1999 canadian si (d16y8) with 180k and i wanna add more hp

but it sucks cause its an automatic

so i was thinking a full exhaust and cold air intake

how much hp would that add



also debating a b16a2 swap
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Old 03-28-2014, 01:42 AM
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not enough to justify the price its automatic so you already have the short end of it. don't bother wasting money on bolt ons spend your money elsewhere like cosmetic or suspension upgrades because it mite be slow but you can make it ride on rails. if you must upgrade just get a universal muffler like vibrant street power no fart cans please. CorSport: Universal Parts - Exhaust - Exhaust Components - 1145 you can also find the cheapest intake you can find on ebay but replace the filter with a name brand like AEM.

Last edited by itburnswhenIP; 03-28-2014 at 01:47 AM.
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Old 03-28-2014, 05:40 AM
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An air intake and full exhaust won't make a very noticeable difference. It will definitely SOUND better, though.

D series don't respond well to bolt ons. However, they respond very well to turbos.
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Old 03-28-2014, 01:58 PM
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how much boost could the tranny handle though.

Last edited by itburnswhenIP; 03-28-2014 at 02:00 PM.
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Old 03-29-2014, 10:22 AM
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300psi if you push it through a McDs straw. Boost pressure means almost nothing. Boost pressure in relation to size of turbo is what matters.

Autos wont handle anything a turbo can provide for long. OP, I suggest swapping to manual.
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Old 03-29-2014, 04:47 PM
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thanks for the mechanics lesson i will refrain any further slang in the future as to not induce further ridicule.
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Old 03-30-2014, 05:25 AM
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ok, go ahead and take offense to what I said lol.
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Old 03-31-2014, 07:11 AM
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Realize that a Canadian Si is pretty much identical to the EX sold in the USA.

The auto transmission tends to be short lived if you drive it hard-- even with a stock engine. So my recommended boost would be zero unless you convert to manual.
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