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Old 10-13-2013, 11:23 AM   #18
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Agp shop car with l99 went 10.9@132 tonight in crappy 6000+ da. Not bad.

6000+ da.? What's that. How many psi were you running?
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Old 10-13-2013, 12:57 PM   #19
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11ish
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Old 10-13-2013, 01:57 PM   #20
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11ish
What's the 6000 da. mean?
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Old 10-13-2013, 02:49 PM   #21
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What's the 6000 da. mean?
Density Altitude. Physical elevation plus atmospheric conditions calculated in relation to ideal conditions at sea level.

The torque curve is more concave than I would have thought. The S256 is relatively large. Most of the BW stuff likes more pressure ratio.
Still waiting to see an EFR set-up on a v8.
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Old 10-13-2013, 04:27 PM   #22
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Torque curves have been really dependant on tune and customer wants. Shop car made 740ft/lbs at 3k rpm. Also using a loaded dyno vs unloaded has an effect on the spool up time which makes it look like power comes on a lot later than it does on the street.
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Old 10-13-2013, 04:41 PM   #23
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Torque curves have been really dependant on tune and customer wants. Shop car made 740ft/lbs at 3k rpm. Also using a loaded dyno vs unloaded has an effect on the spool up time which makes it look like power comes on a lot later than it does on the street.
Yeah, unloaded Disneyjets aren't ideal for turbo.
The shop car has the same turbos, displacement,etc?
I would expect a lower boost set-up on a street car to be very fat mid-low with a good match for sure.
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Old 10-13-2013, 06:33 PM   #24
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Not 100% sure on which turbos. AGP would have to chime in. I was racing the shop c7 vette, and it was slow. Camaro killed it.
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Old 10-14-2013, 09:52 AM   #25
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Well a few things were playing into that graph. A little false knock was making it jump down. Things fit pretty tight and we thought they might be tapping/rubbing around that point. I was going to try alternate motor mounts later along with other goodies and will retune and see how it looks.

Also the car needs 3" exhaust for these turbo's, I would worry about it even less with the s251's but I think it would help even more with these. The exhaust and motors mounts will get done come spring. Already getting down to the 40's here.

I tried to play a little the other day when it was about 65 out was just going sideways lol

Also it would continue to build better imo with a .82 a/r as right now im running .63 which Kevin recommended I swap to the larger but since I already had the kit and was more wanting a street toy I wanted to see how the lower a/r would play on the street. Ill be running more in the mid band than upper on the street.

I was actually a little disappointed at the boost kick in, you can tell that they are there from 2k+ on the street but it does not get wild till about 3500+
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Old 10-14-2013, 09:59 AM   #26
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Its all trade offs. The base turbos kick in crazy fast. You got the bigger ones that will do 1100+ and are making <700. A 3" exhaust will help a bunch though so don't be too worried.
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Old 10-14-2013, 10:36 AM   #27
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Ya, thats what I think also. Honestly right now its awesome the way it is. Im not worried at all.

The "only" problem i've had so far is getting someone to play with me once they hear my car :(

I've passed a turbo porsche and a ton of mustangs and a couple rice burners and not getting much love in getting someone to play LOL
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Old 10-14-2013, 01:45 PM   #28
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Originally Posted by Levischilz View Post
Well a few things were playing into that graph. A little false knock was making it jump down. Things fit pretty tight and we thought they might be tapping/rubbing around that point. I was going to try alternate motor mounts later along with other goodies and will retune and see how it looks.

Also the car needs 3" exhaust for these turbo's, I would worry about it even less with the s251's but I think it would help even more with these. The exhaust and motors mounts will get done come spring. Already getting down to the 40's here.

I tried to play a little the other day when it was about 65 out was just going sideways lol

Also it would continue to build better imo with a .82 a/r as right now im running .63 which Kevin recommended I swap to the larger but since I already had the kit and was more wanting a street toy I wanted to see how the lower a/r would play on the street. Ill be running more in the mid band than upper on the street.

I was actually a little disappointed at the boost kick in, you can tell that they are there from 2k+ on the street but it does not get wild till about 3500+
I'm sure it's still a ton of fun.
I was actually saying I would want boost sooner, not more power.
All depends what you want,but most go too big because they think 1000whp will happen in the future. The kits don't seem to be any different.
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Old 10-14-2013, 01:49 PM   #29
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This is what I'm after.
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Old 10-14-2013, 02:38 PM   #30
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I was actually a little disappointed at the boost kick in, you can tell that they are there from 2k+ on the street but it does not get wild till about 3500+
I saw that you installed the AEM Truboost EBC - did you/they set up the Spring Pressure (SPr) to get that boost up earlier? If so, what is the current setting for SPr?
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Old 10-14-2013, 02:43 PM   #31
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That is what the shop car graph looks like but much more of a torque spike down low. Went to 740ftlbs then dropped back down.
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Old 10-14-2013, 03:20 PM   #32
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This is what I'm after.
[IMG]
If you look at both graphs they are very similar in powerband.

Levischilz makes 500 ft lbs at 3400rpm
Unobtanium makes 500 ft lbs at 3200rpm

Levischilz makes 600 ft lbs at 3600rpm
Unobtanium makes 600 ft lbs at 34000rpm

I know I am racing dyno graphs here which I HATE, but it's not as big of a difference as you see. Those couple hundred rpm difference can be made up or equalized by different dynos on different days, etc.
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Old 10-14-2013, 03:41 PM   #33
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If you look at both graphs they are very similar in powerband.

Levischilz makes 500 ft lbs at 3400rpm
Unobtanium makes 500 ft lbs at 3200rpm

Levischilz makes 600 ft lbs at 3600rpm
Unobtanium makes 600 ft lbs at 34000rpm

I know I am racing dyno graphs here which I HATE, but it's not as big of a difference as you see. Those couple hundred rpm difference can be made up or equalized by different dynos on different days, etc.
Absolutely agree. Also agree that dyno's are not ideal comparisons, but both are dyno jet, and just meant having that 50-100 ft/lbs a few hundred rpm sooner is a lot more fun than 50 hp up top.
The graph posted is of a 6L LQ9(ls6 cam) with 25 year old technology Grand National stock turbos, at 9 and 12 psi. They are rated as 350hp turbos, and are really quite small. Point being, same exact size with the new wheel technology would be better all over.
What turbos are on the shop car? Those sound like a killer set-up.
Post up a vid of the car...would like to see that!!!
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Old 10-14-2013, 04:33 PM   #34
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Absolutely agree. Also agree that dyno's are not ideal comparisons, but both are dyno jet, and just meant having that 50-100 ft/lbs a few hundred rpm sooner is a lot more fun than 50 hp up top.
The graph posted is of a 6L LQ9(ls6 cam) with 25 year old technology Grand National stock turbos, at 9 and 12 psi. They are rated as 350hp turbos, and are really quite small. Point being, same exact size with the new wheel technology would be better all over.
What turbos are on the shop car? Those sound like a killer set-up.
Post up a vid of the car...would like to see that!!!
It's close to 100 up top. but I'm not counting. And that few hundred RPM sooner on a drift car might be ideal. Either of these setups on the street is way more than will be utilized fully. I do completely see your point and any little bit of widening the area under the curve is what the goal is, (whether or not it's ever usable).

Turbos on the shop car are identical to what the OP has.
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