ADTR SUCKS! (Intake Update!) Lots of pics! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-11-2003, 06:51 AM   #1
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Default ADTR SUCKS! (Intake Update!) Lots of pics!

Ok.....that was a pun. ADTR sucks....alot of air! I got the test-fit intake yesterday from Hector, and the performance gain was amazing, even considering my heavily modified stock airbox. Much better throttle response, and not alot more noise. My supercharger whine is more evident, but that'* MUSIC, not NOISE. The REALLY amazing thing is that I'm making these observations BEFORE my PCM has time to re-learn the AFR curves. Right now, the car is still running lean from the change (I used my scantool to verify my suspicions on this). A few more miles, and it should settle right into the performance curves

Absolutely no question that this would be a serious performance boost from a stock airbox and paper filter, and I saw the difference from a vented airbox with a K&N!

Now for the OTHER part. The Series 1 SC is apparently different in fit from the Series 2 NA. The 2na has an angled upper intake plenum that sets the TB pointing forward slightly, so it needs less angle in the mandrel bend of the intake pipe. The Series 1 SC comes straight out, and therefore needs a slightly more extreme angle in the pipe. The good news is that all I had to do was trim the silicon reducer to that angle, and PRESTO! Perfect fit. Another difference I found was that the Series 1 and Series 2 IAT sensors are different diameters. I simply increased the grommet size from 5/8" to 3/4" to make mine fit.......and the other good news for Series 1 is that the stock IAT harness will reach the filter, so there'* no need to buy an extension, make an extension, or mount the sensor closer to the TB. It goes right where it should!

Here'* a bunch of different views. If you look closely at the Silicon reducer on the TB, you can see the angle I trimmed off of it to make the fit more comfortable. I'll get working on a heat shield this weekend (I already have the polycarbonate).

Enjoy!






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Old 04-11-2003, 09:38 AM   #2
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SWEET!

So the ony issue with the fit was the slight trim needed to the reducer? and no IAT harness is needed? I was looking at the wiring for that when I did my SC rework and thought it might be long enough on mine.

So when do these bad boys go on sale? And will the final sale piece have the reducer "adjusted" for that angle or is it truely that easy where we can just do it ourselves?

My car is gasping for more air like a 80 year old man in a marathon. I can't wait to get it!
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Old 04-11-2003, 11:26 AM   #3
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would there be complications on the series 1 na? is the tb the same as the series 1 sc??
LOOKS SWEET!!!
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Old 04-11-2003, 03:42 PM   #4
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I'm impressed on how sharp of a curve it makes by the TB.
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Old 04-11-2003, 04:53 PM   #5
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I want one!!!!!!!!!!!!!
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Old 04-11-2003, 05:39 PM   #6
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Dang Will!!! I almost had a heart attack when I saw the post topic!!..I have been waiting since November 4th for mine to come, and I thought "Oh no!!"

Looks good though...Seems worth the wait...
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Old 04-11-2003, 08:03 PM   #7
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THAT'* SWEEEEEEEEEEET!! Can't wait to get mine! Will, how difficult was it to trim the silicon and how should I do it (since I have the series 1 NA). And what exactly do I have to do for the size adjustment for the IAT?

You have the same color scheme under the hood as me, minus the bar. If only they had gold plug wires :pimp:

And I should have waited, I ALREADY BOUGHT THE IAT EXTENSION!! Oh well, I'll try to sell it if I can.
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Old 04-11-2003, 08:12 PM   #8
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I think Hector will make the adjustments for the IAT and angle. Not really sure yet, as we didn't have that much time to talk about it. I'll leave that to him.

I don't think he'd ship an intake and expect the customer to change the hole location or size. Remember that this was a test fit, but it was successful, and we know what'* needed now. Trimming the silicon reducer is easy, but I did it in a more meticulous fashion. I inserted the appropriate size of PVC (scrap from work) in the reducer, and set up a jig to cut the reducer and pipe at the same time on a band saw so the reducer wouldn't 'collapse'. A sharp knife or good pair of scissors would be fine. You don't have to be that accurate, but I needed a good idea of the angle for feedback to Hector.

I bored the new IAT hole with a 3/4" endmill. I have a pretty well-stocked machine shop.

We'll know about the Series1 NA this weekend, when I can get Jseabert to pop his hood for me. I think the Series 2 SC is the same as the Series1 in angle, but we're still sorting all this out.

I'm giving Lilpooky her first test-ride with it in a couple minutes.....we'll see if she pees on my seats!
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Old 04-11-2003, 09:24 PM   #9
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that is one CLEAN engine gay. props! do they make an adtr for the 87-91??? is it better than custom fitting a civic cai on there like timsmooth???
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Old 04-11-2003, 09:26 PM   #10
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Hey Will, are you running the intake with or without the MAF screen?? I know about why or why not to remove it and how, but what would you (or anyone) suggest for me since it tends to be a bit dusty here in CNY? I'd like the further performance gain if I removed it but don't want a bunch of foreign sh** in my engine. Thanks, and post some new 0-60 times!
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