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Old 01-01-2013, 01:04 PM   #1 (permalink)
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Default Fm vs. Sdk exhaust manifold

I was looking at the 2 of these manifolds for my E1 Equipped car. FM $700 vs SDK $270. port work looks real nice on the SDK. The design changes of the elbow restriction look about the same..Anyone had any experience with these 2 pieces...Didn't find much on these with the search! Thanks http://www.forwardmotioninc.com/html...og/page20.html SDK Motorsports :: Mopar :: SRT-4 :: Port & Polish :: RS Exhaust Manifold

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Old 01-01-2013, 01:05 PM   #2 (permalink)
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Go with sdk!!! No reasons to pay $700 fir something that really isn't going to make big improvements lol


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Old 01-01-2013, 01:13 PM   #3 (permalink)
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Quote: Originally Posted by SRT4Delta46 View Post
Go with sdk!!! No reasons to pay $700 fir something that really isn't going to make big improvements lol



Are you saying a ported manifold with the elbow fix makes little or no power gains over a stock manifold? I find that hard to believe...
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Old 01-01-2013, 01:18 PM   #4 (permalink)
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The FM will make more power hands down.. and you don't need a 3" o2 housings so when you compare costs you need to look at that also...
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Old 01-01-2013, 01:33 PM   #5 (permalink)
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The only mani that you can compare to the fm would have to be a external gated one. The elbow is just part of the restriction.
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Old 01-01-2013, 02:42 PM   #6 (permalink)
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FM manifold > anything.

Has the best elbow modification.
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Old 01-01-2013, 03:15 PM   #7 (permalink)
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Quote: Originally Posted by tunerlover3 View Post
FM manifold > anything.

Has the best elbow modification.

Ya' I think he designed it specificly for the E1...Mike said realisticly around 25WHP on my setup on 93 pump...
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Old 01-01-2013, 03:58 PM   #8 (permalink)
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I have the FM manifold and stuck with Mike's recommended upgrade path.

My best 1/8th mile is 8.064 @ 92.88 MPH. My fastest MPH is 95.11. Yes, the ET needs to improve but I think the MPH shows the power its making.

If you have the E1 currently, I would recommend the FM manifold. Itís a proven combination that works. Just my thoughts, good luck.

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Old 01-01-2013, 04:27 PM   #9 (permalink)
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I wouldn't spend the money on either.Your basically heading down a dead end road with the setup anyway. And the horsepower per dollar really isn't there.
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Old 01-01-2013, 05:09 PM   #10 (permalink)
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Quote: Originally Posted by 93stang434 View Post
I wouldn't spend the money on either.Your basically heading down a dead end road with the setup anyway. And the horsepower per dollar really isn't there.

I cant totally agree with you on this one. I have the FM mani and love it. I do agree the HP per dollar isnt there but I wanted to make a easy 300whp on pump93 and not have a laggy turbo. I also wanted under the hood to look as stock as possable. I also didnt want to get into the mess of fuel system ,tunning and all the big turbo mess. This seemed to fit my needs and ive been very happy with the FM E1 and FM Mani.
If it was all about HP per dollar nitrous is still the best lol.
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Old 01-01-2013, 05:42 PM   #11 (permalink)
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Yes, Nitrous would be fun.

A bigger turbo is tough to argue.

I guess itís all in what you want and how to get there.
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Old 01-01-2013, 06:19 PM   #12 (permalink)
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I have a ported manifold and 3 in O2 housing with E1 and I noticed a noticed a small gain running pump gas from 8.4 to 8.3 range in the 1/8 mile. Mopar downpipe and exhaust.
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Old 01-02-2013, 10:02 AM   #13 (permalink)
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Im switching to E85, so if I do the manifold at the same time I would have no clue on its portion of the performance gain...If I can get 350WHP or so without it I may spare the expense till later if at all...
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Old 01-02-2013, 12:07 PM   #14 (permalink)
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I have been making my race ported elbow modded mani for almost 3 years now. I
My 380/444 and 11.7@122 were done on it with a 16g bws.
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Old 01-02-2013, 12:25 PM   #15 (permalink)
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Quote: Originally Posted by mole' View Post
I have been making my race ported elbow modded mani for almost 3 years now. I
My 380/444 and 11.7@122 were done on it with a 16g bws.

mole whats your egts look like also whats your drive pressure vs boost pressure?????
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