OBX intake manifold

[Slippi84]

Modern Performance!

THanks if I knew how I would give you plus one +

By the way I just called them and they said like 220 bucs for them and it bolts right up and it's 60mm. SO pretty much it's the jeep without the neck down.

 

[InfiniteGSX]

Thanks! I'm not really familiar with the Jeep TB?

 

[Slippi84]

Thanks! I'm not really familiar with the Jeep TB?

Actually this is a great find but I'm seeing how cheap the jeep tb's are and you have to do the same mod to the modern performance with the sensors so it's kinda not worth it but still a great find for anyone that wan'ts a quality aftermarket peace.

 

[Locke]

I thought about that but that shit has to be real bad on low end power. the jeep tb is 60mm that funnels to like 57 or something like that.

I'm just curious is there such a thing as too big of a tb? I mean I know everyone will say yes but what are the real downsides to using a huge tb. I mean the car will be boosted so I mean ity shouldn't cause that much of a low end loss and to be honest tracvtion isn't my best friend since i ditched awd anyway so a little low end power loss isn't the end of the world.

I realllly like dsm-zero's unit but I'm afradit of ill-effects on performace.

A larger TB will not hurt performance, rather it will allow for more potential airflow. The downfall with going to a monster TB is that the throttle will become extremely touchy.

An example: if a 55mm TB flows X amount of air at 20% open, a 60mm may flow X amount of air at 15% open, and a 90mm may flow X amount of air at 5% open.

 

[InfiniteGSX]

Actually this is a great find but I'm seeing how cheap the jeep tb's are and you have to do the same mod to the modern performance with the sensors so it's kinda not worth it but still a great find for anyone that wan'ts a quality aftermarket peace.

what do you have to Mod on the Modern Performance TB for the Sensors? They bolt right up....

 

[bullettdsm]

ok here we go................ make sure the runners match the gasket along with the flange bolt holes, port atleast the first 3 "inches of the runeners to get rid of that transitoin from runner to flange, not sure if they have injector humps but it they do trim them down some, put the throttle body that ## running up to it and make sure the hole is centered properly, and if u were capable i would cut that damn plenum off and radius those runner into the plenum floor, not to mention tapering the plenum to get rid of that huge volume and to help air flow into the last 2 cylinders........ i dont like it, bad design and quality IMO (well for n/a anyways).

mike

Hey Mike, good to see you crossing over (I hope you are researching for the intake )

Alright, here goes mine; The thing sucks. Got that out of the way. Now since I just installed this today (sorry Mike I needed something till I see yours), Start at the Throttle body. Yes you can put a jeep on there. Simply elongate the TB holes (as in the instructions) and bolt on. Then open up the throttle and make your marks. When you take it off, just allow for the small amount on the diameter that your marker couldn't get to and port out. Now, inside the plenum; I broke out laughing when I saw that . Take a carbide bit with an extension (I use the same extensions that we use to go through the top and bottom plate from floor to floor in a house (to run wires) and grind those tubes flat. Now the head side flange. They already have the injector humps gone but the transition for the tubes, sucks balls. They have 1/4" steps coming from the plenum side toward the head at the flange. Talk about screwing up flow. Gotta grind these into smooth transitions. Careful not to grind through the tube. You can then go through and polish as you want. I used an air die grinder and polished very little. It took about 3 hours for me to grind it down (but I've had lot's of practice).

As for fitment, I only had a couple of issues; the fuel rail (easy fix, just elongate the rail bolt on holes) and there is very little room to fit the intake in. Obviously, even if you want to put in a phenolic spacer, it wouldn't fit.

As for the holes lining up, oddly enough there flange does line up pretty well. It's their tubes to the flange that are no good.

I took some pics because I am going to do a goof ball write up on the install on 2gnt. So here's a couple of pics;

MB

 

[Slippi84]

what do you have to Mod on the Modern Performance TB for the Sensors? They bolt right up....

Right but that's exactly what you have to do to the jeep tb to get it to work and the jeep can be had for like 100 bucs shipped which is 100 bucs plus shipping less then the modern performance tb

 

[Slippi84]

Hey Mike, good to see you crossing over (I hope you are researching for the intake )

Alright, here goes mine; The thing sucks. Got that out of the way. Now since I just installed this today (sorry Mike I needed something till I see yours), Start at the Throttle body. Yes you can put a jeep on there. Simply elongate the TB holes (as in the instructions) and bolt on. Then open up the throttle and make your marks. When you take it off, just allow for the small amount on the diameter that your marker couldn't get to and port out. Now, inside the plenum; I broke out laughing when I saw that . Take a carbide bit with an extension (I use the same extensions that we use to go through the top and bottom plate from floor to floor in a house (to run wires) and grind those tubes flat. Now the head side flange. They already have the injector humps gone but the transition for the tubes, sucks balls. They have 1/4" steps coming from the plenum side toward the head at the flange. Talk about screwing up flow. Gotta grind these into smooth transitions. Careful not to grind through the tube. You can then go through and polish as you want. I used an air die grinder and polished very little. It took about 3 hours for me to grind it down (but I've had lot's of practice).

As for fitment, I only had a couple of issues; the fuel rail (easy fix, just elongate the rail bolt on holes) and there is very little room to fit the intake in. Obviously, even if you want to put in a phenolic spacer, it wouldn't fit.

As for the holes lining up, oddly enough there flange does line up pretty well. It's their tubes to the flange that are no good.

I took some pics because I am going to do a goof ball write up on the install on 2gnt. So here's a couple of pics;

MB

That's about all the same problems I saw and good to know that the only problem with bigger tb is twitchy throttle. I think I might still try a mod like dsm zero only problem will be IC piping as transistioning from 90mm(which seems to be like 4") to a 2.5" pipe is going to be interesting as I"m not trying to make 700hp like him and 4" ic piping might not go so good

 

[bullettdsm]

Right but that's exactly what you have to do to the jeep tb to get it to work and the jeep can be had for like 100 bucs shipped which is 100 bucs plus shipping less then the modern performance tb

Actually, depending on the year TB that you buy, you might have to mod the IAC on the Jeep (or splice a different connector onto your wiring harness). I don't know the year break down, but I have used both. And given the choice (if you had the IAC that wouldn't just plug in), I'd splice in the new connector (instead of altering the IAC). It's much easier.

MB

 

[InfiniteGSX]

What size is the Jeep TB... and off of what jeep? There are TONS of jeeps in U Pull It...

 

[Slippi84]

No I read the write up you just have to use the IAC cap to seal it perfect and the TPS. It's like 91-03 or something with 4.0l v6 tb. I had a real good idea. I know when I had to 1g tsi I read about people using Q45 tb's which are 90mm and would work just like dsm-zero and it has a tps and IAC.


edit: Now I just have to figure out how it will wire up to the stock stuff????

 

[BigRand]

Right but that's exactly what you have to do to the jeep tb to get it to work and the jeep can be had for like 100 bucs shipped which is 100 bucs plus shipping less then the modern performance tb

To be clear, I think you mean, you have to do the same modifications to get the modern performance TB to bolt up to the OBX intake manifold, as you would if you were to buy a jeep TB

The modern performance one bolts directly up to the stock mounting locations of the stock manifold, so I guess the more important question to ask is does the stock TB bolt directly up to the OBX intake manifold without any modifications.

 

[Slippi84]

To be clear, I think you mean, you have to do the same modifications to get the modern performance TB to bolt up to the OBX intake manifold, as you would if you were to buy a jeep TB

The modern performance one bolts directly up to the stock mounting locations of the stock manifold, so I guess the more important question to ask is does the stock TB bolt directly up to the OBX intake manifold without any modifications.

Ok i'll be more clear and reference the write up on it. You reuse the tps sensor and Idle control from the stock unit which must be changed over to either the jeep or the modern performance. Mounting they have the exact same mounting location and wholes ect. By modification I meant simply as stated that sensors and such must be changed over. My point was if you have to do just as much work to get one to work as the other and the jeep can be bored to a true 60mm, same as the MP, then why spend 140 bucs more on the MP???

 

[Shadow98]

Because the Jeep TB requires more mods/ alterations than the MP TB and i'm lazy... Lol.

 

[Slippi84]

Because the Jeep TB requires more mods/ alterations than the MP TB and i'm lazy... Lol.

I'm telling you I read the write up and talked to MP it's the same thing you swicth the same stuff over. That's the only mods you do is switching over sensors. It's a 20 min job no matter which way you go tops, but hey if you like the MP go for it it's still a nice tb.

 

[Locke]

For the Jeep TB, the 2gnt's butterfly shaft groove needs to be cut longer, the base needs to be trimmed off, bolt holes need to be elongated, the 2gnt IAC needs the Jeep pintle attached, and an idle set screw installed.

It is a little bit more involved than just switching sensors, for the Jeep TB option.

 

[Slippi84]

For the Jeep TB, the 2gnt's butterfly shaft groove needs to be cut longer, the base needs to be trimmed off, bolt holes need to be elongated, the 2gnt IAC needs the Jeep pintle attached, and an idle set screw installed.

It is a little bit more involved than just switching sensors, for the Jeep TB option.

Lets not get into symantics . Ok so I was downplaying the whole swap that was just me trying to justify not wanting to dish out the extra 130bucs or w/e for the MP when for that kinda money. Besides I think the q45 has my name written all over it only problem seems to be IPS and making sure which wire goes where.

 

[Locke]

Lets not get into symantics . Ok so I was downplaying the whole swap that was just me trying to justify not wanting to dish out the extra 130bucs or w/e for the MP when for that kinda money.

I wouldn't want to dish out the extra money either. I would just work with the Jeep TB.

 

[BigRand]

how much is that q45 TB?

 

[Slippi84]

how much is that q45 TB?

like 130 shipped at most I've seen with all the sensors and such. It's big though. Matter of fact I don't see it even being possible on a stock manifold. If you have to add material to port a 60mm whole for a jeep tb this thing is gonna require so crazy fabricating on a stock manifold but on a huge obx plenum I have more then enough room as proved by dsm-zero. By the way the q45 is really like 83mm-80mm or something like that which I like cause my car is dd and not gonna be seeing 700hp any time soon

 

[4UH8ERS]

like 130 shipped at most I've seen with all the sensors and such. It's big though. Matter of fact I don't see it even being possible on a stock manifold. If you have to add material to port a 60mm whole for a jeep tb this thing is gonna require so crazy fabricating on a stock manifold but on a huge obx plenum I have more then enough room as proved by dsm-zero. By the way the q45 is really like 83mm-80mm or something like that which I like cause my car is dd and not gonna be seeing 700hp any time soon

THE Q45 with a v8 is 90mm

how much is that q45 TB?

http://cgi.ebay.com/ebaymotors/90MM...1136567QQihZ001QQcategoryZ33558QQcmdZViewItem

 

[bullettdsm]

I'm telling you I read the write up and talked to MP it's the same thing you swicth the same stuff over. That's the only mods you do is switching over sensors. It's a 20 min job no matter which way you go tops, but hey if you like the MP go for it it's still a nice tb.

How's about you do both then come tell me that it's the same thing. For those reading, it is NOT. Locke listed the mods properly. The pintle mod is what I refered to previously. If you don't have the same connector, then you will need to do this mod (which can be dicey if your pintle wants to stick in there).

And the question of will the MP bolt right up to the OBX? Yes, but you will need to bore out your throttle body hole to match the opening of your throttle body.

MB

 

[all_motor_mike]

that plenum is just huge!.......... and this picture is a perfect example of why if i did not make my own manifolds i certainly would not buy an OBX POS.........

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A larger TB will not hurt performance, rather it will allow for more potential airflow. The downfall with going to a monster TB is that the throttle will become extremely touchy.

An example: if a 55mm TB flows X amount of air at 20% open, a 60mm may flow X amount of air at 15% open, and a 90mm may flow X amount of air at 5% open.

well said sir. the bigger the throttle body the touchier it is, not to mention 4 of them.

 

[Slippi84]

How's about you do both then come tell me that it's the same thing. For those reading, it is NOT. Locke listed the mods properly. The pintle mod is what I refered to previously. If you don't have the same connector, then you will need to do this mod (which can be dicey if your pintle wants to stick in there).

And the question of will the MP bolt right up to the OBX? Yes, but you will need to bore out your throttle body hole to match the opening of your throttle body.

MB

CHillax man I already stated it takes more then just the plugs I said that because the one I was looking at had already been modded and just needs the sensors. There is a holley 57mm model where you can just swap the sensors for cheaper then the MP tb too by the way.

 

[Slippi84]

that plenum is just huge!.......... and this picture is a perfect example of why if i did not make my own manifolds i certainly would not buy an OBX POS.........

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well said sir. the bigger the throttle body the touchier it is, not to mention 4 of them.

If you want to mass produce them for around 200 bucs let me know


edit: by the way sorry if I missed it but where was your opinion on how to make the manifold better in your post ???? If we needed another OBX manifold sux forums we would just revive one of the 1000000 of them already out there.