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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 03-20-2013, 10:52 PM   #1
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Couple questions I'd like to have cleared up...?

Hey guys,
I have a couple quick questions I would like to have cleared up. I didn't think I needed two threads though.

I am installing my cheap-o sunpro boost gauge tomorrow. Which line should I tap into for a t5 car? I read was reading through the sticky, and learned the differences, but before I cut in I'd like to double check.
The line the is dotted in the picture (that I swiped) is OK for t5 cars, yes?

I'll tap in closest to the firewall of course.

Second question (a bov question) when getting the turbocharger swapped out, the mech said something along the lines of "remove the recirculating hose feeding the turbo's inlet pipe, plug the inlet hole, then angle the BOV's outlet (what the recirculating hose was attached to) towards the fan shroud" to get more a of bov type sound. Is there any truth to this? Will it not create a vacuum and suck in air or will it remain closed? I remember somewhere (I think one of Bogans threads) that the stock recirc valve (or bpv) remains open at idle. If there's a how-to for this with some pictures, that would be boss.

I'm not really a description person, I tend to have to see a picture to know whats being talked about.

Thanks!
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Old 03-21-2013, 02:46 AM   #2
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Tap into the vacuum line that you have Dotted. The one that goes to the top of the Valve.

Is that engine picture a T 7 ?
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Old 03-21-2013, 04:25 AM   #3
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Tap into the vacuum line that you have Dotted. The one that goes to the top of the Valve.

Is that engine picture a T 7 ?
yeah, black DI Ecopower... pretty sure that isnt T5...
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Old 03-21-2013, 04:37 AM   #4
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Go ahead and vent the BPV. Mine has been run that way for probably 45k miles. Very common.
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Old 03-21-2013, 05:36 AM   #5
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Go ahead and vent the BPV. Mine has been run that way for probably 45k miles. Very common.
Seconded. I ran mine this way for several months before I got a BOV.
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Old 03-21-2013, 09:52 AM   #6
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Do not vent if you have an AMM, which you do.
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Old 03-21-2013, 10:47 AM   #7
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T7 cars do not like to be "vented" it throws off the MAF (mass air-flow sensor) and causes the system to go rich. T7 is like a helicopter parent and quickly negatively adjusts system settings, not the least of which is an accrued fuel-trim, which could lead to lean conditions.
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Old 03-21-2013, 12:44 PM   #8
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He says he has a T5 car, but that pic is of a T7 engine.

Tap into the hose coming off the map sensor on the upper strut bar. That is what I did.
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Old 03-21-2013, 12:44 PM   #9
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Wait yeah, I'm confused. I replied before looking at photos. T7 doesn't like it, but you said this is for a T5 engine, which the pictured one is not. Clarify please!
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Old 03-21-2013, 12:46 PM   #10
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OP has a 97 900. Pic is from this tutorial thread https://www.saablink.net/forum/tutorials/24593.htm
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Old 03-21-2013, 06:24 PM   #11
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Thanks Stig, yes I have a T5 and that is where the photo is from. That's a t7 in the picture I am just using it for reference.

If I vent the BPV to atmosphere, will I still be able to use that line for the boost gauge, or should I use the hose coming off the map sensor on the upper strut bar if I do that?
Thanks for the responses.
Just to clarify and work on my maaaaad paint shop skillz


Everything correct right?
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Old 03-21-2013, 06:34 PM   #12
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And, what should I plug it with? I could think a physical plug would be prone to shrinking and expanding in this 20 degree weather. Would some duct tape (actual duct tape, with high heat aluminum and adhesive) suffice? I know it may not look the best, but I'm more of a function over beauty type, and it should still hold when damp and last if I clean it up first. I pull the stuff off old vent systems that are 20+ years old in homes and it was still doing its job after all the abuse from temps.
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Old 03-21-2013, 08:27 PM   #13
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step 3 is correct on the picture. step 1 is completely wrong, the bpv needs to stay connected to the aluminum pipe, but can be disconnected from the long rubber hose that goes back to the intake. step 2 doesn't matter, the bpv can be pointed in any direction.

this should help
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Old 03-21-2013, 08:47 PM   #14
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step 3 is correct on the picture. step 1 is completely wrong, the bpv needs to stay connected to the aluminum pipe, but can be disconnected from the long rubber hose that goes back to the intake. step 2 doesn't matter, the bpv can be pointed in any direction.

this should help
Yes. Makes much more sense now. I was totally missing how that would work. lol What did you use to cap the hole with?
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Old 03-21-2013, 08:48 PM   #15
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And thank you
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Old 03-21-2013, 09:48 PM   #16
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For a cap, head to Lowe's or Home depot and poke around. Anything for a plastic cap that you can hose-clamp on the end is totally fine.
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