-+- My custom cobb SF intake (gt3071r) -+-

[socks]

So when i first installed my gt3071r, i was using an RPMC inlet pipe.

This required a 4" to 2.5" reducer at the turbo. yikes. I wasnt happy with its orientation, the reducer was crushed just to fit, and it was a huge reduction in size that i was not happy with.

I started by relocating the battery to the trunk to relieve some of the "kink" in the reducer at the turbo. It helped, but was still kinked, and a 1.5" reduction right at the turbo.

So now with all that extra room in the engine bay, i decided to make a custom 3" inlet. I used a 4" to 3" reducer, with a 45* bend in it, right at the turbo. from that, i used a 3" aluminum pipe, with another 45" bend. this pointed the intake directly towards the front of the car.

then i used a 3" coupler to connect the inlet pipe directly to the cobb maf housing, and retained the cobb filter.

The problems with this are that between the inlet pipe, and the cobb silicon piece, there are 2 connections that i had to account for. one is the crankcase vent on the valve cover. For now, all i did was put a small breather filter on it. I will have a piece welded on so i can use a hose to connect this back to the inlet pipe.

Also, the HKS valve i have was recirculating to the RPMC inlet. For now i am just venting this to atmosphere. no problems yet, but i still plan to have another piece welded to the inlet to recirculate.

I am not even concerned with the wastegate solenoid dump.

Overall this cost a little over $225, with the battery relocation kit ($110), the aluminum was $60, and the silicon connections and Tbolts were about $45. the breather filter was another $10

I am very happy to have the kink out right before the turbo, as well as a much larger inlet pipe. I still have to clean up the wiring for the battery, and make a bracket for the ecu, and possibly the intake.

Pics are below

Next... Porting the ATP exhaust housing wastegate opening.

[xcoldricex]

what is this battery relocation kit?

[socks]

i got mine from summit racing. Its a sealed battery box. Includes a drain, and enough 2 gauge wiring for a power and ground. it also comes with clips and such to run the wire securely.

its the premium battery relocation kit on summitracing.com

[crazyitalian041]

I did the same as well for my gt3071r.

[subparpunk03]

Whats the deal with the ECU? How did you mount it?

Looks awesome sean!!!

Also, can I get my inlet back now please

[socks]

yes, you can have it back.

I definately notice a good difference. although, the roads are still wet.

im pumped. i cant wait to color match it to the FMIC pipes, and have it finalized.

[socks]

PS, im gonna plug siliconintakes.com for the silicon pieces i got from them. I got both pieces from this time, and the old reducer from them. although i was not happy with the application of a 4" to 2.5" reducer, they were the only place i could find it, and got it to me fast.

[phailerider]

what the hell tune are you running on that thing.

[socks]

a beta tune from christian@cobb, hes been getting me revisions every time i send him logs, unfortunately, i havent been able to log too too much...

[phailerider]

Originally Posted by Speed3shon a beta tune from christian@cobb, hes been getting me revisions every time i send him logs, unfortunately, i havent been able to log too too much...

wow...ok. what boost are you running? and youre still on stock internals right?

we need to keep an eye on you man.

[socks]

still on stock internals, 16psi other than creep, i dont let it go over 18psi.

once i port the wastegate or solve my creep somehow, whether it be porting or EWG, im gonna work on the motor...then after that its 21-22psi, and water/meth or possibly nitrous...

when you get your car back you gonna go with more than 18psi?

[phailerider]

Originally Posted by Speed3shon still on stock internals, 16psi other than creep, i dont let it go over 18psi. once i port the wastegate or solve my creep somehow, whether it be porting or EWG, im gonna work on the motor...then after that its 21-22psi, and water/meth or possibly nitrous... when you get your car back you gonna go with more than 18psi?

my car is basically done, i drove it(babied) on sun/mon.... maybe a week or two i'll be back up in DC to pick it up. FCF, standback street tune at 23-24psi.... then back to NC and dyno at the home dyno for baseline. im hoping for 400-425 or so..... it might be less cause of fuel and maf size... which will be worked out next. anything less than 400 i'll be disappointed.

at that point, after a little enjoyment and the baseline dyno.... back up to cpe for some whoosh goodies, maf, and meth.... i want 450 on the gt3071. i dont know what i'll do after that. maybe stop for a while.

still thinking its possible i'll chase 500 in the spring if better fuel options come along. im tempted to be the first with a secondary rail too... but even if i make 500, then so much other stuff will start breaking.... and the cost will start getting ludicrous. the first two parts are a given though.

[ElBartoRex]

That is awesome I am really glad those parts are working out for you.

I have considered relocating my battery many times with one of those universal kits-- where did you end up putting it? got any pics?

[superskaterxes]

Originally Posted by Speed3shon Next... Porting the ATP exhaust housing wastegate opening.

fuck this, go whoosh style and do an EWG......

[gsrtype1]

nice! sub

[LBV]

Originally Posted by Speed3shon PS, im gonna plug siliconintakes.com for the silicon pieces i got from them. I got both pieces from this time, and the old reducer from them. although i was not happy with the application of a 4" to 2.5" reducer, they were the only place i could find it, and got it to me fast.

Intercooler Pipe Fabrication - Silicone Intake Systems Auto Parts << that website has a couple of interesting items I noticed: 1 - an intake pressure tester to catch boost leaks and 2 - intakes with splash shields around them for uou guys running cai's - these are priced at $14.99 ???

[ms3guy22]

where did you run the wires to? more specificially the route into the car.

[subparpunk03]

He ran them along the floor on the passengers side, then up underneath the glove box through the firewall and behind the heat shield in the engine bay. Its all pretty well hidden, I ran my wires / tubes for the water injection in the same location and you can't even tell its there unless you look in the trunk.

The battery box is screwed into that big flat trunk "floor" piece on the passengers side.

[socks]

more pics:





battery box:

[crazyitalian041]

what box is that? where did u get it?

[Eazy]

Originally Posted by crazyitalian041 what box is that? where did u get it?

Really? did you even read the freaking thread?!?!

Originally Posted by Speed3shon i got mine from summit racing. Its a sealed battery box. Includes a drain, and enough 2 gauge wiring for a power and ground. it also comes with clips and such to run the wire securely. its the premium battery relocation kit on summitracing.com

[crazyitalian041]

woops. i didnt connect 2 and 2.

[socks]

Im still working on making a bracket for the ecu, and cleaning up the battery wiring.

It does feel alot stronger now that i can drive it on dry roads. could also be since i washed my car. anyone else get that feeling that it is faster after a carwash? :-P

[subparpunk03]

It IS faster after a carwash... less friction, and uhm.... less dirt weighing you down.

Also, good lord that thing is FAST. We'll have to see how it compares to mine once I put on an IC and downpipe.

[socks]

mmmm... just wait til i dont have to pedal it to keep the boost down... cuz then i may actually be able to get some logs for christian, and he can make me t0000n..

im thinking 18psi will be safe as long as it doesnt creep...