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Discussion Starter · #1 ·
I stole this from a 900 forum elsewhere, and wondered how other saabs compared....

Test procedure:
1. find straight, flat, empty road (and still legal if you choose a dual carriageway)
2. drive at steady 30mph in third gear. (left-foot braking is cheating)
3. simoultaneously open throttle and start stopwatch.
4. wait until 70mph on speedo, stop stopwatch.
5. repeat in opposite direction of road.
6. post result!

My first attempt gave 7.0 seconds (on way to tip car full of rubbish) and 6.8 seconds (on way back empty) Maybe I should have turned the aircon off, but it was 24degC.

There does seem to be a fair delay while it comes up to boost and goes properly, so I thought I'd try 40-80 to see if it is quicker to boost from higher revs, but there is still a noticable delay. Time was 7.1 seconds.

How does your 'performance saab' compare?
 

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Based on videos I have of my speedometer and a stopwatch, I get almost exactly the same results as you, SJ.

I had a passenger in mine, but I've found the error just in estimating exactly where the needle on the speedometer lies is greater than the effect of having one extra passenger.

Though one passenger (190 lbs in this case) may represent the difference in weight between 9-5 Aero and 9-3 Viggen. Not shabby times any way you cut it if you ask me though.

Dubbya~
 

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I did this a month or so ago and got:
1. 6.9
2. 7.1
3. 6.8
4. 7.2

I then tried it a few days ago with 16" wheels and Dunlop SP Sport 9000 tyres, and got 6.7 twice. No other changes to the car, a 1991 900 S Aero LPT, slightly modded. I'm rather pleased
 

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Haven't got that particular gear time to hand but a while ago on an offish day I got:

30-70 (2nd gear) 4.2S
40-80 (2/3rd gear) 5.2s
40-80 (3rd gear) 6.2s

Or therabouts
 

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In the £350 2.3 FPT abbott Auto, with golf bag, a passanger and a 2400w audio system.

1) 6.96 (slight incline)
2) 5.85 (slight decline)


Have not tried it in the Manual yet, will do though !!
 

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I have an AP22 Accelerometer, but haven't tried the speed difference you refer to.
Mananged a 6.76sec 0-60 and 15.36 1/4 mile.

I'll try the other tests when I remember

Skiddins
 

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I got a [email protected] mph on the quarter mile in the Viggen at 3,000 ft altitude.

According to Road and Track, the correction for that track (LACR) is 3% on ET, and 6% on trap speed. Which would put me at [email protected] ... coincidentally this is also the best time the g-tech pro gave me at sea level.

I'm quite pleased as it's a full half second faster than the MY 2002 Viggen was "supposed" to run according to most magazines that tested it. In fact it's dead on what the magazines tested when it's at 3,000 ft. Wonder if they just tested the car at high altitude because they wanted bad numbers?

Dubbya~
 

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Originally posted by Mark E:
[qb]30-70 (2nd gear) 4.2S[/qb][/b]
I haven't timed it solely in 3rd gear either and my 2nd gear runs out at around 65 so with a change to 3rd, I managed 30-70 in 4.7 sec, which isn't bad, I think...

Would like to take it on a drag strip (just once) to see how it does on the 1/4 mile. Gets to 100mph in 12 seconds so I'd hope its 1/4 mile time would be reasonable
 

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My 30-70mph in 2nd gear was around 4.8 seconds in 2nd gear, which again, anything under 5 seconds is pretty quick,

Also tried timing 0-60, 6.1, 5.9 & 7.1, The 5.9 I think my passenger was a little early on the stop button, and 7.1 had way too much wheelspin

All I do know for sure is that my car is as quick as a TVR 450 Chimera between 30-90, starting in 2nd gear, my cousin owns one and we had a little experiment, he was less than impressed that we were dead level and he had only pulled out a small lead by 85mph (1/2 car length) I also held off a series 1 XKR to the ton
 

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50 to 75 in 3rd = 5.8s (slight uphill gradient with passenger)

50 to 70 in 3rd = 4s dead (flat road)

both recorded running 95RON

the old sierra cossie timed 50 to 70 in 3rd in 3.6s

must say that I don't have any noticable lag, just constant shove. Quite unfair on us Saabers as 3rd gearing is good for touching the ton.

2.0ltp 9-5, stage 1, recent turbo, DV & large dia inlet pipe - std wheels and FR

have not tried 30 to 70 through gears passenger was getting fed up!
 

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Had a quick blast this morning,

Anyway, 40-80 3rd, 6.2

Could not get a decent 30-70 in 3rd, best was 8.0 !

30-70 in 2nd was 4.9 (0.1 down on last time)

50-70 5th 6.7

Had way too much lag for the 30-70 in 3rd
 

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saab90002.3t "Had way too much lag for the 30-70 in 3rd"

Yes, a 30-70 mph run in third gear doesn't make sense for a late model 9000, let alone one with decent modified software. The viggens have the shorter final drive, 4.05:1 IIRC. The 9000's have much longer legs. Then there's the matter of progressive boost, which tuners like Maptun will utilize to keep the transaxle from blowing up. For example, mine gets peak boost at the 3500-4500 rpm band (1.65 bar). At 30 mph in 3rd, I'm lucky if the saab is turning 2000 rpms - the boost is better than a stock aero, but nowhere near the peak. 40-80 would give better figures, and 50-90 mph would probably give the best
 

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Ok, just got into the office. I checked the speedo on the way into work: 1700 rpms @ 30 mph in 3rd. Certainly, it's not a very good idea to be lugging around with WOT at that speed and gear
 

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Discussion Starter · #14 ·
Originally posted by saab90002.3t:
[qb]Could not get a decent 30-70 in 3rd, best was 8.0 !


Had way too much lag for the 30-70 in 3rd [/qb][/b]
My car had plenty of lag too....

But that's the point, this seemed a decent measure of how quickly your turbo comes up to boost - if you don't have any lag, it makes a big difference to the time and the response, like Jezzadee's quick ex-lpt.

The 30-70 is reasonably convenient, do-able legally and isn't too unreasonable for most cars.
Previously some C900 owners were concerned about not reaching 70 in third, now we have 9000 aero owners who don't want to do 30 in third.... you can't win
 

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I agree, interesting comparison, however, I can hit 70 in second and probably around a ton in 3rd, so starting from 30mph (1700rpm) is never going to be great in my car, a few more revs and its great, I certainly wouldnt call my car "laggy" certainly not in the 80's turbo sense of the word.

For me its 50-70mph of under 7 seconds is much more pleasing, meaning I dont have to worry about changing down, if wanted to be quicker 30-70 I would use 2nd gear

Anyone seen the time for a Mk1 Imprezza Turbo 50-70 5th ? how does 13.4 sound, source Autocar 6/4/94 Now that is lag
 

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Right 90002.3t, neither is mine "laggy". It's a matter of being in the right gear - as long as the rpms are around ~2200 rpm, then there's almost instantaneous response when I hit the loud pedal - my boost pressures are around 1.2 bar at 2300 rpm. My only point is that apples and oranges are being compared, even in terms of turbo lag - the longer final drive on a 9000 means lower rpms at a given speed, vis-a-vis a vehicle w/4.05:1 final drive.
 

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Had 3 or 4 rough and ready tries tonight on the way home.

3rd gear, 30-70, wrist watch.

All runs were around 6 seconds.

Andrew
 

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Just managed 30-70 in 5.8secs

Does anyone have even a rough idea of the CdA's for any Saab?

I realise that the Cd for a Saab is probably 0.31 to 0.35 but I have no idea about the CdA.

Anyone?

Thanks
Skiddins
 

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Originally posted by SJ:
if you don't have any lag, it makes a big difference to the time and the response, like Jezzadee's quick ex-lpt.[/b]
At 30 in 3rd I'm doing roughly 2400 RPM, and the turbo comes in slightly before 2400 normally, so I'm already spooled up. At 70 mph in 3rd I briefly entered the dashed red section of the rev counter, so 5600 RPM. I'm running a fraction under 1.2 bar boost, and the LPT's have type 6 primaries - a lower gear ratio than an FPT, so in many ways this test is perfect for a tweaked LPT. The downside is that at 70 mph in 5th I'm humming along at 3200 RPM.
 

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Whereas, in my 9000 I'm doing over 90 mph @ 3200 rpm. Anyway, Andrew: considering that you're 9000 has the much taller final gearing (3.61:1 vs. 4.05:1) your 30-70 mph times in 3rd gear are more than respectable. There's no viggens or 9-5's that will beat it, I'm 99.9% certain
 
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