HKS les-h05 exhaust for DX hatchback

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Old Apr 8, 2010 | 08:50 AM
  #1  
Captain Key!s's Avatar
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From: Denvah, CO
Default HKS les-h05 exhaust for DX hatchback

So earlier this week I ordered my HKS Sport Exhaust from Options Auto Salon. According to HKS and OAS, this exaust is made for 88-91 Civic Si. Now, my question is that I have a 1991 DX. Will this still fit a DX? Or does the Si models have completely different exhaust hangers from the factory? I did quite a few searches but nothing really came up except for a few pics/ where to buy thread.

I would like to get some input from the owners of this exhaust and what it took to install (if done by themselves). Please don't repsond with "yeah, it should." If it comes down to it, I will have a shop fab some new hangers up, but I'd rather not have to. Thanks!
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Old Apr 8, 2010 | 09:58 AM
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From: LA!
Default Re: HKS les-h05 exhaust for DX hatchback

if u have aftermarket header ur allright i think the only difference is the stock header down pipe being shorter on the dx
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Old Apr 8, 2010 | 09:59 AM
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Default Re: HKS les-h05 exhaust for DX hatchback

I have the factory exhaust manifold, any more info out there?
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Old Apr 8, 2010 | 10:02 AM
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From: LA!
Default Re: HKS les-h05 exhaust for DX hatchback

it wont bolt up thats all i got good luck
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Old Apr 8, 2010 | 12:49 PM
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Default Re: HKS les-h05 exhaust for DX hatchback

just buy your self a header while your at it. then youll have a complete exhaust system. BAM!!!
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Old Apr 8, 2010 | 12:57 PM
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-NA-aLL-thE-wAy-'s Avatar

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From: Tornado Alley
Default Re: HKS les-h05 exhaust for DX hatchback

I ran into a length problem installing my Tanabe HSM. I ended up buying a cheap aftermarket header and using the cat from the wagon partout project I had going. I'm not sure about the difference between the DX and Si hatch, but I can tell you for sure the wagon exhaust manifold and the LX sedan manifold are much different. One has a "B" pipe section after the manifold and the other doesn't, the manifold is just longer. That may be the case for the DX/Si hatch, but I am not certain. I'm sure someone will chime in who has experience.
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Old Apr 8, 2010 | 01:15 PM
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Default Re: HKS les-h05 exhaust for DX hatchback

Thanks for the input guys. I want to keep the engine as stock as it came from the factory (like I said this is a 98% OEM build). Looks like I might have to get a small piece welded at an exhaust shop to get this to fit. No worries, it going on one way or the other. I can't afford a Mugen, so the HKS is the next step!
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Old Apr 20, 2010 | 07:10 AM
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From: Warner Robins, GA
Default Re: HKS les-h05 exhaust for DX hatchback

sorry to bring this back from the dead, but insted of making another thread im just going to piggy-back off this one. I notice that the HKS is 50mm (just under 2")... how does this exhaust perform with a b-series swap? I have a ls/vtec set up with DC 4-2-1 and a blox 2.25 test pipe with 2.25 piping all the way back to a crappy can and it sounds like crap... i love the sound of the hks but with its small piping im worried on its performance.
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Old Apr 20, 2010 | 07:30 AM
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Default Re: HKS les-h05 exhaust for DX hatchback

^^^^ as long as your not boosted you will be fine with a smaller dia. pipe
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