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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: Cold Air Intake made for T7!!!! Reply to Thread
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Topic Review (Newest First)
10-20-2005 01:44 PM
stevehayes01 Unfortunalty my car has not gotten to visit the dyno as of late but it does get G-tech runs that will give a +/- 1% compared to a Mustang dyno and the car is doing respectable.

The last Gtech I did rated the car at 210WHP but we will see when I actually do make it to the dyno (hopefully soon).

What I can say is that the T7 is very adaptive and hard to fool. However I can say just from my experience that the T7 will allow about 15-20% +/- in the performance department around the stock preprogrammed values when you add stuff like new FMIC's, 3" DP's and intake mods.

I hope to post some more info on my findings once I finish the next project I am working on so hang tight.
10-20-2005 01:32 PM
codesplice I hate to resurrect such an ancient post, but after reading through this thread, I'm dying to know...

Steve - how'd the dyno runs turn out? What was learned about the modded T7?

An on the AC compressor... I've got a ScanGauge computer that I use for checking up on various engine measurements. One of the cool features of this little gadget is a display of your engine loading. At idle, I've noticed that the AC compressor loads the engine by about 7%. So that's 7% of your engine's power that is otherwise occupied by running the AC compressor.

-John
12-02-2004 08:11 AM
ricot83 the reason u probably didnt notice stock was that there wasnt much power loss compared to now.... it also depends what kinda climate u r in... but no matter what car u have, having the ac or heat on will rob power
12-01-2004 03:02 PM
DC_SAAB I only noticed this after installing my Maptun ECU...., and when my stock ECU is in...no obvious power losses at all..

Your results may differ if you have Maptun, but feels like another 15 - 20 horses, really noticeable after I started switching the Climate control off and on. Like the AC compressor clutch is actually loading the motor down.

I'll check results (CC on/off) again with my stock ECU to confirm more...

regards
12-01-2004 02:30 PM
saabvos easy for you, you live in cali
for us northerners who right now wake up to temps close to freezing the heater is awfully tempting
12-01-2004 02:20 PM
stevehayes01 Keep in mind that is is the heater or the A/C sicne they utilize both utilize power robbing resources in the car. Just dropping the voltage of your car by running lots of stereo equipment or the parasitic drag of an A/C compressor can slow the car down alot. Stickshifts can overcome this a little easier than the Autoboxes can since you can control your power a little bit more through rev's and such. But if you plan on killin the other cars then you should always keep the air off. I can notice a massive difference on my 9-3 HOT when the climate control is on so I just decided I will never use it!!

Thats what a sunroof and heated seats are for..... that way you can stay warm or cool depending on the circumstance!!!!!
12-01-2004 02:14 PM
saabvos i will also confirm DC, the AC does suck up power when it's on....so be sure to turn it off before waxing another victim
12-01-2004 01:53 PM
DC_SAAB I noticed with my Climate Control needs to be turned off for full power. Which might be the reason some complain about tested results.

If anyone cares to confirm.., try dynoing your car.., before and after you turn off the AC or Climate Control...you'll see and feel a definate difference. I found myself turning off my stage 3 Maptun just before dusting off the next victim.

I also confirmed this with Maptun/Johnny....

Quote:
The Idle problem during AC is a slight problem on every original Saab 900/9-3 year 1994-00, caused by a power loss when the ac compressor get activated. The same is during full acceleration, he will have less power with the AC on. That has nothing to do with the ecu.
12-01-2004 10:01 AM
saabvos from my personal experience with my '99 9-3, i got approximately 15% drivetrain loss so from my stock 185bhp i got 155whp

since you have the HOT i'm estimating that all things being stock 200bhp will translate to 167-168whp

since you have airbox i'm guessing +5whp and smbc depending on your uprated boost levels that would be another few horse

my guess is 185-190whp

i guess we'll see by your run

good luck!
12-01-2004 09:12 AM
stevehayes01
Quote:
Originally Posted by saabvos
yay AWD!

Quote:
3" Air box mod (that should not affect Dyno results as the car will be sitting still)
it should add a couple extra horses, put a fan blowing into the box to increase flow, it should partially simulate driving conditions

i surely hope the dyno shop will have a fan blowing into the IC
The shop I am using will have 2 high velocity fans going and has even mentioned misting for the IC if I am interested so we will see. I think I will pass on the misting since I dont run a mist system in daily life but the fans are a must!! I am really hoping that SAAb has underrated these cars but I don't think that will be the case but you can dream right??? The other good factor right now is that I am shooting for an early morning apointment and the temps here have been in the high 30's and low 40's in the mornings (cold for Southern Cali) so IC heat soak has not been too much of a problem this week on the road atleast.

I will definatley be doing a plug and unplug for the battery and will see what that nets me. The shop I am using is $65 for 3runs with A/F as long as the 3 runs are made within a 2 hour window so thats pretty cool that I will have time to change things up a bit.
12-01-2004 08:05 AM
ricot83 LMFAO lol those numbres u r hoping to put down r the exact same numbers i was hoping i would get then i got 30hp more than that and i was like holy shit.... dude unplug our battery and plug it back in 5 min later if u can before u dyno.... i am curious to see what the difference is when the ecu is adapted, and when the ecu is reset... i wish i could have done a run with my car before i had unplugged the battery... but o well maybe this coming year ill do that also without an smbc u will more than likely have a rich af curve as apposed to with the smbc.... my curve was perfect never went lean at all...
12-01-2004 07:48 AM
saabvos yay AWD!

Quote:
3" Air box mod (that should not affect Dyno results as the car will be sitting still)
it should add a couple extra horses, put a fan blowing into the box to increase flow, it should partially simulate driving conditions

i surely hope the dyno shop will have a fan blowing into the IC
12-01-2004 07:37 AM
abdukted1456
Quote:
Originally Posted by saabvos
i agree, after having been in abdukted's car it really moves....
I should add, it really moves AFTER the tires stop spinning.

AWD would have been nice in these cars.
12-01-2004 07:32 AM
stevehayes01 Well ricot83 and abdukted1456 I have the same car as both of you and I will be getting to the Dyno hopefully if the appointment comes through on Dec. 10th. so we will see exactly what a stock T-7 9-3 HOT Autobox puts down. The only mod I am running is an SMBC and 3" Air box mod (that should not affect Dyno results as the car will be sitting still) at this point. If I pull 175-190 WHP it will be right in line with what I think it will pull but if it gets to be a little higher then great also. I also intend on a base run with no SMBC so I get a baseline A/F,HP and Torque curve for the car then I will add the SMBC back in and see what it pulls after that.

Hopefully not too long from now I will have a T-5 car to play with as well since I talked my sister in law into looking at a 99 SAAB with a 5spd. We can only hope she turns to the dark side as well!!
12-01-2004 07:12 AM
ricot83
Quote:
Originally Posted by saabvos
i agree, after having been in abdukted's car it really moves....it feels almost rotary in a sense....the power delivery is soo smooth you don't realize you're going 90-100+mph until you look down at the speedo that was with stage 1 sw
sounds very very strangely familiar
12-01-2004 06:44 AM
saabvos i agree, after having been in abdukted's car it really moves....it feels almost rotary in a sense....the power delivery is soo smooth you don't realize you're going 90-100+mph until you look down at the speedo that was with stage 1 sw
12-01-2004 06:34 AM
abdukted1456 i can't wait to get these damn studded tires off and hit the dyno in the spring.

I am basically stock the only mod that probably effects peformance is the optiflow intake/cone filter- and I have both my stock and Maptun stage 1 ECU to compare some numbers....

I am hoping for a pleasant surprise like rico's numbers. I know it's a silly automatic, but aside from a little less torque, the thing really moves nice even on stock software, especially in the higher gears, it pulls wicked hard around 70+ MPH even on stock SW
12-01-2004 05:59 AM
saabvos
Quote:
smbc
kn drop in filter
aero exhaust side
saab sport exhaust


these are hardly enough mods to give me 50whp over stock...
not necessarily
now first off, i have a T-5 9-3 but my gains were as follows on a dyno +30whp just from disconnecting the exhaust and an open airbox

rico, you have a larger exhaust and an open air filter, that smbc can give you an extra edge depending on how much boost you're pushing so it's not entirely out of the question to gain +50whp from the mods you have irregardless of the fact you have T-7 and i have T-5
11-30-2004 09:07 PM
ricot83 i also VERY VERY VERY STRONGLY agree with steve on this .... as my car is a perfect example of this... my car put down 219whp and 217lbft auto transmission with the following mods
smbc
kn drop in filter
aero exhaust side
saab sport exhaust


these are hardly enough mods to give me 50whp over stock...
another thing that amazed me 2 days ago was this.... my car is winterized, meaning it is parked until winter is over.... so i played around with it, i made a custom intake and a custom heatshield, and also ported the in and out sides of the inlet pipe.... now what amazed me was the fact that i pulled out my smbc and am still boosting higher boost than stock... i know people are going to say that it hasnt adapted down and blah blah blah but this has never happened any other time i took out the smbc boost immediately went back to stock levels..... iknow that if i could drive the car around more than just a mile, it could adapt downwards...

when i did dyno my car i disconnected the battery for 5-10 minutes i dont remember but if u guys have a t7 if u disconnect the battery and reset the ecu, u will have more power until it adapts downward again....
11-30-2004 03:59 PM
stevehayes01 Ok since this is the first time I have seen this post now I have to chime in. If the T-7 was not able to adapt to modified exhaust then SAAB would not sell you one from the factory.

T-7 9-3
http://www.saabcatalog.com/retail/ca...+System&Page=1

T-7 9-5
http://www.saabcatalog.com/retail/ca...+System&Page=1

I am a firm believer in the fact that the T-7 is very advanced and adaptable but I believe that from car to car it has so much variance that its not predictable. But based on the fact that SAAb sells a modified sport exhaust for the T-7 cars that is prrof enough for me that the T-7 is capable of handling shift in VE (within reason). If a car ran less HP than expected with more mods on a modified Stage 3 ECU that doesnt surprise me either since the modified ECU was setup to work with the mods wrapped up in the stage 3 kit that it was tuned around.

Ricot's car is a perfect example of a T-7 that is uptuning the car within a certain amount. He should not have put down 200+Hp in all instances with his mods if the theory of MODS = Potential loss and No gain in Peak HP. Once again this is my opinion only and I am new to the world of the T-7 but he has a dyno sheet to show the gains as well as Nick T. does.

I also have to agree that even if peak Hp is not uprated by the ECU it is possible to still be faster in a 1/4 mile base on the ability to make peak HP sooner in the power curve. Now does this cause a lean out condition?? I can't say for sure but the simple way to find out is to fit an A/F gauge on a car and watch to see if it stays stoich or not and if it stays good then there's your proof that the mods don't lean out the T-7 fuel system. In any case it is always necessary to look at a fuel system when increasing the flow of a motor (that is a practice that goes back as far as engine building goes) so once againit would not surprise me that extra compensation on the fuelside would be needed.
Ok so next question is if one had a Tech II can you adjust the fuel rate within it? and I have posted this on other forums but is it possible to swap the MAF out to a performance MAF?

Does anyone have an A/F gauge on their car? If so do you ever lean out? If so what grade fuel are you using? what is the ambient temp in your area? and what mods are on your car?

Ok sorry for the long post but I am just trying to get to the bottom of this and work towards a faster car.
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