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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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Thread: Saab Viggen Intercooler Flowbench Results Reply to Thread
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Topic Review (Newest First)
08-20-2014 08:58 AM
DC_SAAB I have an extra Viggen Intercooler if you're interested
08-14-2011 03:43 PM
sha-d Google: trolltuner intercooler
08-14-2011 03:35 PM
secret ingredient You mean like heat shielded from the filter on? I'm still not sure I'm following. I do know though that the stock IC isn't all that great. Even the vig ic is a big improvement, and if you have an hks that will fit, thats even better.
08-14-2011 02:49 PM
sha-d A closed passage way from your bumper opening to the intercooler. Just found it. It was trolltuner that did it. Id link you, but ive been out of net and using a three year old nokia. I do have an hks ic that ive been waiting to put in. The question was whether the stock ic would perform as good/less/more than a viggen ic
08-14-2011 02:33 PM
secret ingredient
Quote:
Originally Posted by sha-d View Post
Awesome read! Thank you op for the thread along with the others for the great info. As for ducting the intercooler, i remember reading a thread on here where one did this(gs?). Question is, say i do decide to keep my u-turn ic, and build a ducting system, will it be as good as swapping in a viggen ic? Also, when building the ducting, should you completely close off all openings or keep the top/bottom open? Thank you (:
You can get one from ebay, craigslist, the for sale section here, junkyards (if lucky its not busted), etc. Don't waste your time on the stock intercooler. Not worth it, since it doesn't work as efficiently. What are you talking about with closing the ducts?
08-14-2011 02:20 PM
sha-d Awesome read! Thank you op for the thread along with the others for the great info. As for ducting the intercooler, i remember reading a thread on here where one did this(gs?). Question is, say i do decide to keep my u-turn ic, and build a ducting system, will it be as good as swapping in a viggen ic? Also, when building the ducting, should you completely close off all openings or keep the top/bottom open? Thank you (:
10-06-2010 02:21 PM
AndriusSAABUA
Quote:
Originally Posted by MONSTAMUNCH View Post
Since it seems that its better to leave the stock viggen ic, would it be possible to drop the ic so that it is inline with the opening in the front bumper, or what about putting a curved piece of plastic under the ic to direct more air up onto it, or what about drilling a whole lot of holes in the front bumper to direct air straight onto the ic? Anyone tried any of these options?
if you go on youtube theres a video of a guy who upgraded his 2001 -04 model 9-5 and it beats porsches and m3s and has a new paint job. anyways if you look at it you will see 4 big circle holes on his fron bumper so i think maybe it really is better to do that.
but to answer your question..idk lol
so does anyone know the answer to this question..
is it a difference if there is more air going directly into the intercooler through holes in the front bumbper than leaving the bumper un touched?
01-23-2010 08:55 AM
Marks9-3
Quote:
Originally Posted by PoisonBeef View Post
a few things.

1999 9-3 HOT does have the viggen IC but a t25 turbo, not td04 turbo. I do not know about 2000+ SE.
The 2000+ SE's had the TD04.
01-23-2010 07:52 AM
PoisonBeef a few things.

1999 9-3 HOT does have the viggen IC but a t25 turbo, not td04 turbo. I do not know about 2000+ SE.

Intake first? I disagree, the general consensus is that open air on the saab is just for sound and the stock intake is good to stage3-ish.

I think that most Saabers would agree that DP before the rest of the exhaust as well. I want to drop a EGT gauge so I can see what I am getting with a 3"dp/sportcat/no resonator/stock rear exhaust. I personally think this exhaust flows fine for a t25 stage 3.

I agree mostly Iceman, but I would go with this is my ever so humble opinion, and haven't even followed it myself. I have updated as things break come up for sale.

1. IC
2. Suspension
3. 3" DP
4. tune
5. rear exhaust
6. tune
7. turbo
8. tune

Everyone will tell you something different.
01-23-2010 07:09 AM
Progression
Quote:
Originally Posted by Ice Man View Post
If I had a T5 I would upgrade as follows:

1. Intake
2. IC
3. Sport Exhaust (dump the rear muffler at the very least, heavy and restrictive)
4. 3" DP
5. ECU Tune

The main problem with the Viggen IC is heat soak. But it was a very noticeable upgrade from the two pass IC, in both performance and driveability. An after market IC is the way to go.
Thanks for the input. For T7 cars, would you still place the Exhaust/Rear muffler before the DP as an upgrade and what about the stock intake vs. a better one?
01-23-2010 07:01 AM
fivepointnine I had kinda a simillar question to above, I have a T7 HOT with the TD04 and Viggen IC, Im planning on upgrading to a 3" DP and a stage 3ish tune, at what HP point does this IC become a hinderance?
01-23-2010 05:57 AM
Ice Man If I had a T5 I would upgrade as follows:

1. Intake
2. IC
3. Sport Exhaust (dump the rear muffler at the very least, heavy and restrictive)
4. 3" DP
5. ECU Tune

The main problem with the Viggen IC is heat soak. But it was a very noticeable upgrade from the two pass IC, in both performance and driveability. An after market IC is the way to go.
01-23-2010 05:49 AM
Ice Man ^ The before and after dyno numbers I saw on SC also had an increase of 9 ft-lbs of torque.
01-22-2010 10:01 PM
Progression
Quote:
Originally Posted by LeGiT SaaB View Post
The HOT 99 9-3 and all T7 9-3's got the Viggen IC. The SE and Viggen models got the TD04. Theres usually about a 10whp gain with an aftermarket IC compared to the Viggen style.
Damn...so going with any aftermarket IC, be it the Forge/ETS/Ebay/etc. one, you gain 10WHP (not BHP, but WHP)??? Do you gain anything else such as better gas mileage?)) I'm all for making as good of gas as possible with my darn auto-tragic! Good thing about the auto-tragic is you can still gear shift with it (no, nothing like driving stick, but), and if gears break, well, a used auto-tragic is very easy to find and they seem to go for about $150 whenever I see them on the used. Not a bad investment for getting to have some play time every once in a while (I'm not a big fan of gear shifting the auto-tragic just fearing I'll kill it though it is way more fun since you obviously hit boost and redline very easily as you would using manual).
01-22-2010 09:55 PM
Progression
Quote:
Originally Posted by NahumCC View Post
It'll be more apparent then the downpipe but not as apparent as the MBC+A setup.
This is interesting. So an upgraded FMIC is actually more apparent than a 3" Downpipe? I would think the DP would add quite a bit more power than a larger FMIC since it's extremely restrictive vs. an FMIC no?

I think there should be a sticky for power mods and which ones add the most power/performance. Something like this hypothetical list:

1) Good tune
2) 3" Downpipe
3) Viggen/9-3 HOT or larger Forge/ETS/Ebay based FMIC
4) 2.5"+ Flex back exhaust

Etc. etc...
01-22-2010 09:50 PM
Legit
Quote:
Originally Posted by Progression View Post
So are the TD04 based 9-3 SE's from 00-02 using the same IC as the Viggen or was the 99' year the only year that got the Viggen sized IC???

Also, how much of an improvement are aftermarket ones such as Forge/ETS/etc. than the HOT/Viggen one OR, better put, at what HP level does one start to consider moving up to the Forge/ETS/etc. larger IC to notice the improvement?
The HOT 99 9-3 and all T7 9-3's got the Viggen IC. The SE and Viggen models got the TD04. Theres usually about a 10whp gain with an aftermarket IC compared to the Viggen style.
01-22-2010 09:43 PM
Progression
Quote:
Originally Posted by Marks900SE View Post
The '99 9-3's did have the crappy version except for the H.O.T.'s, they had the Viggen IC and a little more power. (8th place in the VIN is a P).
So are the TD04 based 9-3 SE's from 00-02 using the same IC as the Viggen or was the 99' year the only year that got the Viggen sized IC???

Also, how much of an improvement are aftermarket ones such as Forge/ETS/etc. than the HOT/Viggen one OR, better put, at what HP level does one start to consider moving up to the Forge/ETS/etc. larger IC to notice the improvement?
10-27-2009 05:53 AM
Marks9-3
Quote:
Originally Posted by Ice Man View Post
The viggen IC is a normal single pass IC compared to the double pass IC found on the 900's (maybe the T5 9-3's had it too) as shown below. These are very restrictive and to upgrade to a used viggen IC and gain 10 HP is relativity inexpensive. I did this on my 900 back in the day. But yes, just about any aftermarket IC is better then the Viggen IC.
The '99 9-3's did have the crappy version except for the H.O.T.'s, they had the Viggen IC and a little more power. (8th place in the VIN is a P).
10-27-2009 05:35 AM
Ice Man The viggen IC is a normal single pass IC compared to the double pass IC found on the 900's (maybe the T5 9-3's had it too) as shown below. These are very restrictive and to upgrade to a used viggen IC and gain 10 HP is relativity inexpensive. I did this on my 900 back in the day. But yes, just about any aftermarket IC is better then the Viggen IC.

10-27-2009 04:04 AM
Progression
Quote:
Originally Posted by 900AERO View Post
so does a larger intercooler flow more air under lower boost pressure. and if so does that explain why I was running 20lb with a small intercooler and now i can't push more 14lb with the larger one ( it's 2x the size ).
Actually, it should be the other way around. More CFM flow from the intercooler=more boost potential. Also, I don't see how the Viggen FMIC flowing at 1/2 the rate of even a stock WRX TMIC can possibly be a good solution when the WRX TMIC is aweful vs. larger TMIC's or good FMIC's. Then again, a Subaru engine is a Subaru engine and a Saab engine is a Saab engine...but CFM numbers shouldn't be any different regardless of the car right? I mean, people upgrading turbos to get say, 500CFM of flow aren't saying they'd rather have a turbo that has 340CFM flow...

I don't quite understand how the Viggen FMIC or anything its size can possibly be considered an upgrade for any T7 car that comes standard with the TDO4 turbo.

Can someone point out specifically where my confusion is with all of this and why one would not put on the biggest/best flowing FMIC if you want the car to breathe well and produce power "specifically" in the upper range.
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