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post #1 of 11 (permalink) Old 09-07-2010, 08:13 PM Thread Starter
 
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Join Date: Jun 2010
Location: Houston,TX
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New 4" Inlet and Filter

I noticed that several of you guys have modified your inlets and after I got my Revolt and saw the size of the inlet hose I can see why. I spent Labor Day weekend laboring and here is what I came up with. Here is a list of items I used.
1) 4"x4" aluminum tube PN 9709 Spectre Performance
2) 4" black ducting PN 9751 Spectre Performance
3) 4" filter support bracket PN 9072 Spectre Performance
4) 4"x5 1/2"x6" filter PN UP6400ST UNI Filter
5) PRC Aircraft Fuel Tank Sealant PRO-SEAL TYPE TANK SEALANTS from Aircraft Spruce

I cut the intake down and bent and shaped the 4" aluminum tube to fit over the intake with about a 1/4" overlap and then glued it on with the fuel tank sealant. I then put a bead of sealant around the outside and sealed it on the inside to make a smooth transition from the aluminum tube to the plastic intake. The sealant is used to seal fuel tanks and windshields on jet aircraft, remains flexible and sticks like you would not believe. That aluminum tube is NOT coming off. Next I welded a piece of flat bar between the roll cage verticals to bolt the filter support to, installed the filter and hose and it's done. I ran out of time so I haven't run it yet. I'm going to Waynoka in a couple weeks with Sandracer and I'll report back with performance results. Mike
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post #2 of 11 (permalink) Old 09-07-2010, 10:52 PM
 
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Location: San Diego, CA
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Re: New 4" Inlet and Filter

keep us posted on the results....

one thing that I did notice when I did my mod is that when I had the huge K&N filter It felt as if it was getting to much air for some reason... I played around a bit with the programer and was able to run better... then I went with a medium size uni filter and played with the programer again and it felt way much better than with the huge k&n... I dont know if there is such thing as too much air, or filter too big, but it worked for me....

after playing with the programer for a while I dialed in to the best I could and did see improvements vs my old stock setup.... I also recently installed an airfuel sensor and when I get my car up and running again I should be able to tune it more precisely....

let us know how that set up works for you...
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post #3 of 11 (permalink) Old 09-08-2010, 05:24 AM
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Re: New 4" Inlet and Filter

That looks great.
The factory ECU settings, are lean. Add a large filter and intake, it could get to lean.
The Big Gun controller fixes that.

Get your self an Outerwear pr filter. They have no effect on performance, but keep the big stuff off your Uni.
Uni is the best out there, in washable filters, IMO.



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post #4 of 11 (permalink) Old 09-08-2010, 10:10 AM
 
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Re: New 4" Inlet and Filter

What air fuel sensor setup did you purchase? I'm looking into purchasing one for my Riot. I have the big gun fuel controller, but have made no adjustments yet because I didnt know which way to go without an air fuel sensor to guide me.
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post #5 of 11 (permalink) Old 09-08-2010, 12:17 PM Thread Starter
 
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Re: New 4" Inlet and Filter

Thanks for the info guys. The air fuel gauge is an AEM. I don't know about the functionality of the gauge yet but it looks great next to the tach and comes with black and silver interchangeable faces. It also has digital and analog readings. Bearfoot, thanks for the suggestion on the Outerwear, where did you get yours? I looked on their website and couldn't find anything to match my filter dimensions. I'll contact them and see if they have something to match. I kinda think that an engine only has the ability to use so much air. If the inlet is too small the power output potential is decreased as is the case with the stock inlet hose. I don't believe that you can make the inlet too big. You just need to add fuel to get the air fuel ratio correct. Sounds easy in theory. We'll see this weekend when I play with the fuel controller. I'll report back with results good or bad.
Here is the link for the AEM gauge.
AEM Wideband O2 UEGO Gauge - Monitor Air/Fuel Ratio with the Digital 30-4100 - Wideband O2 UEGO, X-WiFi, EMS Series 2, Engine Management, F/IC, Tru Boost, Gauges, and more Automotive Performance Electronics
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post #6 of 11 (permalink) Old 09-08-2010, 02:42 PM
 
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Re: New 4" Inlet and Filter

Mike, you better have it ready for little Sahara!!!!! You will need that outerwear for down there for sure. That turbo throws a lot of sand!!
2 WEEKS!!!!!!



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post #7 of 11 (permalink) Old 09-08-2010, 03:17 PM Thread Starter
 
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Re: New 4" Inlet and Filter

Todd, I will have it ready! I ordered the Outerwear after talking with their tech rep. I just wanted to make sure that it would not only work well on filtering sand but equally well on drive belt fragments. I am bringing something along to Little Sahara with you in mind. See picture attached. This is going to be fun. I'll call you this week.
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post #8 of 11 (permalink) Old 09-08-2010, 03:26 PM
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Re: New 4" Inlet and Filter

The bigger the filter, the slower the air will pass through it. The dirt has plenty of time to get trapped and not all much pressure pushing it through.



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post #9 of 11 (permalink) Old 09-08-2010, 04:31 PM
 
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Re: New 4" Inlet and Filter

A nice little outerwear tip is to order it one size larger than the filter. Its a PIA trying to install/remove a skin tight outerwear from a oily filter

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post #10 of 11 (permalink) Old 09-08-2010, 06:24 PM
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Re: New 4" Inlet and Filter

Quote:
Originally Posted by zaniac View Post
A nice little outerwear tip is to order it one size larger than the filter. Its a PIA trying to install/remove a skin tight outerwear from a oily filter
Boy are you right! Bigger is better.



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