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Speed Density Tuned Guys

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Old Oct 7, 2007 | 07:23 PM
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What are you using for a MAF delete tube?? I'm helping a guy out and he may need a MAF, and seeing as how I don't need mine I might donate it to the cause, but I need a good filler tube. I'm trying to find something in aluminum or stainless that could be polished but I'm having no luck.
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Old Oct 7, 2007 | 08:03 PM
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I went to a local muffler shop and got a 6 inch long peice of 4 inch exhaust tube. Painted it black then installed it .
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Old Oct 7, 2007 | 08:39 PM
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Originally Posted by Brandon619
I went to a local muffler shop and got a 6 inch long peice of 4 inch exhaust tube. Painted it black then installed it .
That's what I'm thinking I'm going to have to do also. I just don't relish doing that much polishing. No paint for me.
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Old Oct 7, 2007 | 08:41 PM
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Depends on car, can ne 3.5" pipe or 4" pipe. Sometimes I just leave the stocker with screen to catch any crap that gets in the inlet system.It has helped before wheen I pulled a nut out of the inlet that the screen stopped.
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Old Oct 7, 2007 | 09:47 PM
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Originally Posted by Slowhawk
Depends on car, can ne 3.5" pipe or 4" pipe. Sometimes I just leave the stocker with screen to catch any crap that gets in the inlet system.It has helped before wheen I pulled a nut out of the inlet that the screen stopped.
Yeah, I was already past the screen saving something point. My MAF was descreened prior to the turbo kit. If anything makes it to the turbo though, I'll be surprised.
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Old Oct 7, 2007 | 11:01 PM
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Originally Posted by Fastbird93
Yeah, I was already past the screen saving something point. My MAF was descreened prior to the turbo kit. If anything makes it to the turbo though, I'll be surprised.
Metal supply house fro alu tubing or or marine exhaust house for stainless.

You may luck out and find a drop 3 or 4 inches long.

If you were near me, I would just give you a short piece of stainless 4"

Are you in the armed forces? I'm having a be nice to the military kind of week....if so, then pm me...


Last edited by RJW; Oct 7, 2007 at 11:07 PM.
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Old Oct 8, 2007 | 02:30 AM
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I'm finally going SD myself right now. I just removed the MAF, and used a molded piece that Charlie made. It fit into the inlet of the K&N, and then I connected it right to my air bridge...

JB
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Old Oct 8, 2007 | 04:21 AM
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I have a piece laying around from when I was SD. If I dont need it, its all yours my friend.. I'll know in the next couple of days which route i'm going.
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Old Oct 8, 2007 | 06:38 AM
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I use a 3.5 pipe from Summit. Buy a bend and fab what I need and then I have them powder coated locally. They stand up nicely. I just use the mild because it is relatively cheap and easy to work with.

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Old Oct 8, 2007 | 07:04 AM
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Is the MAF being there some kind of restriction?
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Old Oct 8, 2007 | 07:08 AM
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Originally Posted by Vince99FRC
Is the MAF being there some kind of restriction?
I think the only place this has been proven to be a restriction is on the KB pull through stuff. For us with the turbo stuff, it has never proven to be a restriction.

On a few of the cars I have done, I just leave it in there and do the SD tune. Saves me from divorcing the MAF from the IAT and it a little more stealthy...

Nick
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Old Oct 8, 2007 | 05:15 PM
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Originally Posted by BLOWNZO6
I think the only place this has been proven to be a restriction is on the KB pull through stuff. For us with the turbo stuff, it has never proven to be a restriction.

On a few of the cars I have done, I just leave it in there and do the SD tune. Saves me from divorcing the MAF from the IAT and it a little more stealthy...

Nick
That's what I'm doing too!
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Old Oct 8, 2007 | 05:19 PM
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Originally Posted by Brandon619
I went to a local muffler shop and got a 6 inch long peice of 4 inch exhaust tube. Painted it black then installed it .
Same here but my Twin Intercooler exits Via 3" up to the 4" airbridge so I'm using a 3" piece of exhaust pipe! (6" 's as well)

Thanks,Matt
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Old Oct 9, 2007 | 05:22 PM
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I didnt use anything. I have a Halltech Tric so I guess it doesnt cause the filter to sit high up cause it goes down anyways.
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Old Oct 9, 2007 | 06:12 PM
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Originally Posted by AMERICAN_HP
I have a piece laying around from when I was SD. If I dont need it, its all yours my friend.. I'll know in the next couple of days which route i'm going.
PM Sent
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Old Oct 12, 2007 | 12:37 AM
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Found a fix (for me at least):



I work part time at Auto Zone. Saw this sitting there, grabbed a tape measure, sure enough, it's 3.5" inner diameter. I guess these cheesy chromed tail pipes we sell are good for something after all. Taking a pipe cutter to it shortly.
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Old Oct 12, 2007 | 12:48 PM
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All done as seen below. Was PITA to cut with that hand pipe cutter. I DO have enough of that tip left over that if anyone (APS guys???????) needs a MAF replacement tube I can cut it out of what's remaining for ya.

The fourth pic shows how it sized up (camera phone pics so excuse the quality). Almost EXACTLY the same ID as the MAF ends, but completely eliminates the step to the center section of the MAF.







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Old Oct 12, 2007 | 10:34 PM
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Refresh my memory, what makes speed density desirable? Is it more accurate?
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Old Oct 12, 2007 | 10:44 PM
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Originally Posted by Specter
Refresh my memory, what makes speed density desirable? Is it more accurate?
The SD tune ables the GM PCM to read boost. The vettes PCM doen't read boost from the factory. You demap the car add a 2 bar map and hours of tuning and bang your in heaven.
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Old Oct 13, 2007 | 08:49 PM
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So its just more accurate on a boosted application than a MAF?
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