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Old 01-08-2018, 02:39 PM   #41 (permalink)
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The catch can would hopefully catch all of the oily stuff, but if routin it into the bubbler still sounds dangerous, I'll just route the PCV gases to atmosphere

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Old 01-16-2018, 11:19 AM   #42 (permalink)
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I've now got a 50% lower grille block done, I'll try and grab a pic to try and post somehow, but it's improved warm up time a little...
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Old 01-16-2018, 11:46 AM   #43 (permalink)
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I just did a full lower grill block on my Mirage. It definitely improved warm up times.
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Old 01-16-2018, 11:52 AM   #44 (permalink)
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Even at only 50% lower and full upper blocks, during extended periods of high speed driving(late to work, etc) the engine begins to get warm... I ran late one night and it got up around 215* as I averaged about 73mph(compared to my normal 40-ish mph)
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Old 01-20-2018, 03:55 PM   #45 (permalink)
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Been experimenting with P&G on my commute as opposed to DWL, and have had some nice runs... my UG doesn’t consistently pick up my EOC(doesn’t always go to 999.9mpg but sometimes only to 130-150 or so) but I’ve had some commutes averaging in low forties with temps near freezing... my grille blocking has kept intake temps about 15* above ambient, with the added benefit that heat soak(from sitting) takes far longer to dissipate, yielding better mileage from that as well...

It’s having some idle issues from an oily TB and IACV (i assume) but I’ve got a ported/polished TB with freshly cleaned IACV I’m planning on swapping on soon, as soon as I finish my intake tube and decide whether or not to port my spare intake manifold...

Does intake tube size matter? TB is 2.75” and I was gonna either do 3” or 4” intake tube(with water vapor induction) air box lid was oval outlet but reformed and about same as 3” pipe... my thought was that the 4” to 2.75” would build velocity and help torque, but with the air box lid being 3”, maybe I’d see no further benefit from the 4”?
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Old 01-22-2018, 01:10 PM   #46 (permalink)
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4" is not going to gain you anything. If anything, I'd go smaller. It should increase velocity and while it may choke at high rpm & load, at lower rpms you may see a small torque increase (which can also lead to a FE bump).
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Old 01-22-2018, 05:25 PM   #47 (permalink)
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Given that I experienced about a 3% gain from going to a 3" intake tube on the Malibu I had I'll likely just go 3"... It'll save me about $1.50 all together on the silicone couplers too... I'll try and get enough exhaust tubing to make two pipes, one to use plain and one to add the water vapor venturis to... I might be able to ABA test a mod for once!
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Old 01-27-2018, 01:06 AM   #48 (permalink)
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So I’ve received my couplers and fabricated my intake tube out of 3” stainless steel exhaust tubing(freebie)... my design mimics the GMPP short ram intake design, in that it uses the factory airbox... other L61 drivers have reported gaining 8-10whp from an intake and I remember about a 3” gain in FE on the Malibu and it’s intake wasn’t designed as well... for the total of $22 I have in doing a 3” intake and ported TB(same bore size but with smoother size transitions) I can’t complain...

EDIT: guess I should mention I’m not doing water vapor at the moment... I guessed wrong on the intake tube length and it’ll be uncomfortably short to drill for the vapor tubes; they’d be too close to the IAT sensor...
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Old 01-28-2018, 05:44 AM   #49 (permalink)
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IGL - '04 Saturn Ion
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So I installed all my intake stuff yesterday... I've now got a short ram intake and ported throttle body, and NO PCV gases going into the intake... The car seems a little more responsive, and maybe a little more power above 3500 RPM... Low end seems about the same so far, or at least no significant change... IATs seem to be higher with this intake compared to stock, so there might be a mileage boost, but it's too early to tell at the moment...

Given that I was a little conservative with my TB porting, I considered doing a more aggressive port job on the original one and putting it on...
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Old 01-30-2018, 11:21 PM   #50 (permalink)
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I figured I'd post a more detailed analysis of my mod... Torque from 9-1200 RPM was reduced some, but from around 1400-2000 seems to have been improved slightly... As a result, I can't quite use 5th gear in town as much as before due to the one hill I can't climb anymore, but going from 40-60mph in 5th seems smoother... 80% loads comes up at a lower throttle percentage, so in warm-ish weather I can now accelerate (pulse) at around 20mpg instant versus around 18.9-19.4...

Acceleration seems to have been improved a little from 4000 RPM and up, but since I don't use this rev range much it doesn't matter much... Throttle response seems a little crisper, but these mods didn't drastically transform my car or anything, it still drives much the same as before...

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