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S91 Filter Setup

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Old Apr 27, 2009 | 11:46 AM
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Default S91 Filter Setup

Does anyone have pics for S91 intake filter setup, front mount? What size filter? Any part number?
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Old Apr 27, 2009 | 12:46 PM
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heres a couple photos of my filter setup
not sure on the part number but Bob @ EPP might be able to look it up.
Attached Thumbnails S91 Filter Setup-filter2.jpg   S91 Filter Setup-filter.jpg  
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Old Apr 27, 2009 | 01:04 PM
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Originally Posted by 98transguy
heres a couple photos of my filter setup
not sure on the part number but Bob @ EPP might be able to look it up.

Thanks for posting pics. What's inlet diameter of the filter? Does it clamp directly over the turbo inlet?
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Old Apr 27, 2009 | 01:24 PM
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Anyone has background about HKS SuperPowerFlow air filter "HKS mushroom filter".

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Old Apr 27, 2009 | 03:18 PM
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I have a 5" silicone 90* turning down behind the bumper, and a 10x6 round K&N on the end. My turbo is in the battery location tho.
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Old Apr 27, 2009 | 05:47 PM
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Originally Posted by Denali08
Thanks for posting pics. What's inlet diameter of the filter? Does it clamp directly over the turbo inlet?
i think i found the part number.its a K&N filter #K&N RF-1037 the flange inside diameter is 5"
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Old Apr 27, 2009 | 08:00 PM
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Originally Posted by 98transguy
i think i found the part number.its a K&N filter #K&N RF-1037 the flange inside diameter is 5"
Were your dyno numbers with the filter installed? I'd think that would be a big restriction at higher boost. When I was running the flow numbers for a filter for mine it was going to be super huge to keep up.
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Old Apr 27, 2009 | 08:41 PM
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AFE - Air Flow Engineering. 5" inlet, inverted cone, 10" long

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Old Apr 28, 2009 | 01:41 AM
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Originally Posted by Turbo LS1 SS
AFE - Air Flow Engineering. 5" inlet, inverted cone, 10" long

Clean setup

Is it KY turbo kit? You have relocated the battery to fit 10" long filter. What's the longest filter you can fit there with battery at stock location?
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Old Apr 28, 2009 | 01:53 AM
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Originally Posted by 98transguy
i think i found the part number.its a K&N filter #K&N RF-1037 the flange inside diameter is 5"

So, it's 6.5" long filter. It looks a 10" long filter will not fit with S91 on OFI kit even if the battery is relocated because the turbo sets low, unless the battery location is cut for the filter top.
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Old Apr 28, 2009 | 04:39 AM
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Originally Posted by theblur98ss
Were your dyno numbers with the filter installed? I'd think that would be a big restriction at higher boost. When I was running the flow numbers for a filter for mine it was going to be super huge to keep up.
pretty sure it was installed when on dyno.its been awhile.lol/my setup is far from optimum.i think considering everything it makes very good power.
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Old Apr 28, 2009 | 04:42 AM
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Originally Posted by Denali08
So, it's 6.5" long filter. It looks a 10" long filter will not fit with S91 on OFI kit even if the battery is relocated because the turbo sets low, unless the battery location is cut for the filter top.
well considering OFI is out of businesss, and the fact that most people never got there kit, very few people have to worry about what size filter will fit.lol.
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Old Apr 28, 2009 | 05:36 AM
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Originally Posted by 98transguy
well considering OFI is out of businesss, and the fact that most people never got there kit, very few people have to worry about what size filter will fit.lol.
I have to worry becuase I am installing one very soon. Got it unused from the 1st owner.

I wanted to buy filter but can't make measurements before starting the install.
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Old Apr 28, 2009 | 05:57 AM
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the turbo does sit pretty low on the setup,u can always do as u say and use the stock battery location and cut it out.with that extra weight of the turbo up front u are going to want to relocate the battery anyways.are u using the 4" downpipe setup?
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Old Apr 28, 2009 | 06:21 AM
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Originally Posted by 98transguy
the turbo does sit pretty low on the setup,u can always do as u say and use the stock battery location and cut it out.with that extra weight of the turbo up front u are going to want to relocate the battery anyways.are u using the 4" downpipe setup?
I will remove ABS and A/C components, so, might not need to relocate the battery. I will get fipergalss hood and light Billet Specialties Street Lite wheels, 4" at the front. So, it will all add to weight reduction. Car already have all BMR front stuff, k-member, upper and lower a-arms with coils, shocks and slotted brakes as package from BMR.

Yes I got it with 4" downpipe but not sure if it will fit above my standard BMR k-memebr. Might end up cutting it to dump under hood or cut before k-member and fabricate 4" to 3.5 or 3" reduced extension to sqeeze through the k-memeber.
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Old Apr 28, 2009 | 06:44 AM
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i know the 4" downpipe didnt fit with my bmr k member, switched to the umi k member and it was still pretty tight.are u running a manual steering rack or power steering?
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Old Apr 28, 2009 | 07:04 AM
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Power steering. Might switch to manual after I get lighter 4" front wheels if that will help with downpipe install but no way I am going to switch K-members for just 4" downpipe.
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Old Apr 28, 2009 | 07:11 AM
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the problem with the power steering is that the headers build a lot of heat and they run very close to the power steering reservoir and if u drive for a long period of time it gets hot
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Old Apr 28, 2009 | 07:26 AM
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out of curiousity what is the rest of your setup?motor,tranny.etc...
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Old Apr 28, 2009 | 04:33 PM
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Originally Posted by 98transguy
out of curiousity what is the rest of your setup?motor,tranny.etc...
The test mule is 348ci with 317 heads. I already have the short block built for nitrous (stock crank, forged rods and pistons -2.2cc, all ARP bolts including head studs). Switched plans and just finished installing 317 heads unmilled with Patriot dual springs and MLS gasket onto the short block for 9.5 CR.

Nasty fuel system with external fuel pump, regulator, AN feed and return lines and bungs for stock tank and racetronix 79Ib injectors. AIS in-trunk methanol injection kit.

Transmission is RPM level IV 4L60E with 3-disc 3200 TQ. Not ideal but I had it for NA setup but switched to turbo. So, I think I can test the waters with what I have and try a good tuner. I know that it's not the optimum setup but got to give me credit for trying FI.

I am checking option for future build LQ9 408 or LSX/6 bolt heads and TH400. FAST XFI, Accel DFI or Big Stuff3.

Still in the to do list; rear end, wheels/tires and roll cage. Might leave all of these until it rolls off the dyno tuned.
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