Finally Got The Lincoln LSX On The Dyno

Mechanicboy said:
So it looks like I was right and there's a lot of tuning left. When you tune I suggest tuning from 1200 RPM or lower. Also keep in mind your new rims and tires are lowering your numbers. If your other tires were 255/45r17 than your current 275/35r19 are 2.1% taller and weight more which makes a difference on an inertia style dyno.

Let us know how the tuning goes. Also, how much did your dyno runs cost you?

Oh lastly, what octane gas you running?
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Yes you were right. I guess I could have put the stock rear wheels back on but they wouldn't have looked as sexy.
And as far as the size difference it's only 1% taller over stock. http://www.rimsntires.com/specs.jsp
I only paid $50 for the 2 pulls I did and he said he wont charge me when I come back for the tuning either.
And lastly, the car is on 91 octane
BlackLS06 said:
I bet a good 50hp extra can be squeezed out with a proper tune.
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I sure hope so!
 
Pinknuts said:
Yes you were right. I guess I could have put the stock rear wheels back on but they wouldn't have looked as sexy.
And as far as the size difference it's only 1% taller over stock. http://www.rimsntires.com/specs.jsp
I only paid $50 for the 2 pulls I did and he said he wont charge me when I come back for the tuning either.
And lastly, the car is on 91 octane

I sure hope so!
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I was comparing against the tires you had on there before(which I knew was 255 and r17 but assumed the 45). Comparing against stock, lol, you're hardly stock but yes the 235/50r17 is silghtly taller than 255/45r17.

My point was inertia style dynos aren't very accurate and should only be used for comparisons of before and after to see whether you are gaining or losing with different parts or tunes. The reason for this is inertia dynos don't actually measure torque then calculate HP. Inertia dyno's just measure the acceleration of the dyno drum then extrapolate(estimate) the HP and torque. I'm not saying you graph is wrong because it is good for diagnostics, it's just not as accurate as a load type dyno.

What This dyno does show is how much you can gain in the low and mid range, not necessarily top end power. I think you could gain at least 50ft/lb of torque in the 2-4k RPM range will will make a huge difference in drivabililty.
When I tune my LS I'm going to install a wideband o2 sensor and gauge in my car so I can monitor it in real time so I can tune the part throttle too.

$50 for two pulls is right on the money for what I'd expect to pay. If I had a dyno close by for $50 I'd be there but I have to drive over an hour just to find a dyno shop and I'm not sure which ones are reputable in my area.

I look forward to seeing your progress with much anticipation. Thanks for sharing with us!
 
I got to thinking about your A/F ratio and....you're actually running extremely lean. Not rich. Sorry. I should have caught that earlier.
 
Ls is very impressive all the way around, I bet you love putting your foot in that thing!
 
Mechanicboy said:
I was comparing against the tires you had on there before(which I knew was 255 and r17 but assumed the 45). Comparing against stock, lol, you're hardly stock but yes the 235/50r17 is silghtly taller than 255/45r17.

My point was inertia style dynos aren't very accurate and should only be used for comparisons of before and after to see whether you are gaining or losing with different parts or tunes. The reason for this is inertia dynos don't actually measure torque then calculate HP. Inertia dyno's just measure the acceleration of the dyno drum then extrapolate(estimate) the HP and torque. I'm not saying you graph is wrong because it is good for diagnostics, it's just not as accurate as a load type dyno.

What This dyno does show is how much you can gain in the low and mid range, not necessarily top end power. I think you could gain at least 50ft/lb of torque in the 2-4k RPM range will will make a huge difference in drivabililty.
When I tune my LS I'm going to install a wideband o2 sensor and gauge in my car so I can monitor it in real time so I can tune the part throttle too.

$50 for two pulls is right on the money for what I'd expect to pay. If I had a dyno close by for $50 I'd be there but I have to drive over an hour just to find a dyno shop and I'm not sure which ones are reputable in my area.

I look forward to seeing your progress with much anticipation. Thanks for sharing with us!
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Hey thanks! Now if I want to get technical, the tires that were on there were actually 275/40/17s which were actually not a tall as the stock tires... LOL

And yea it was super rich down low where I would benefit from some more torque with a good tune. I can't wait to get it tuned out.

2000lsv8 said:
I got to thinking about your A/F ratio and....you're actually running extremely lean. Not rich. Sorry. I should have caught that earlier.
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Oh no, it's very rich, especially down low. The number you might be talking about is the max AF on the log, that 18.xx that was from letting off the throttle at the end of the pull. The car was actually in the 10.0s AF ratio in the low RPMs and only leaning out to a max of around 12.4 in the high RPMs.

Alax7 said:
Nice numbers for an NA ls!
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Thanks Alax!
 
Pinknuts said:
Hey thanks! Now if I want to get technical, the tires that were on there were actually 275/40/17s which were actually not a tall as the stock tires... LOL

And yea it was super rich down low where I would benefit from some more torque with a good tune. I can't wait to get it tuned out.


Oh no, it's very rich, especially down low. The number you might be talking about is the max AF on the log, that 18.xx that was from letting off the throttle at the end of the pull. The car was actually in the 10.0s AF ratio in the low RPMs and only leaning out to a max of around 12.4 in the high RPMs.


Thanks Alax!
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You're welcome. I've heard that the ls1 runs lean from the factory and they like to be that way so running mid 13's A/F should be fine. This is what I hear and I don't actually know from experience.
 
Oh can I have some Pics of your car. I just bought a black 2003 and I'd like to do a clone. Man that car looks TIght! ITs the the :q:q:q:q !!!
 
06-08 but I think they are available from 06 until now. After 08 I think there were 2 sport wheel options available for the v8 model, one being the vulcanis wheels. Just look up Volvo xc90 v8 sport or xc90 R.
 
Alax7 said:
06-08 but I think they are available from 06 until now. After 08 I think there were 2 sport wheel options available for the v8 model, one being the vulcanis wheels. Just look up Volvo xc90 v8 sport or xc90 R.
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Thank you very much,, both of ya.....
 
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