Phamspeed Dyno #'s
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Phamspeed Dyno #'s Got the car tuned on the dyno yesterday. I picked a perfect day to do it, 100 degrees outside and the humidity was though the roof.
I wish I had more time on the dyno to play with the Eboost, maybe get it to spool up the turbo a little sooner but I didn't get a chance for that.
Also I think theres something wrong with the RPM's reading on my car and the dyno's because I was watching my tach (stock one) and would let off close to 6k but when we pulled up the dyno you can see me letting off around 4700rpms.
Anyways the car made lots of runs and they were all about the same.
10psi
AFR was mid 11's
0 knock
532rwhp
595rwtq
I wish I had more time on the dyno to play with the Eboost, maybe get it to spool up the turbo a little sooner but I didn't get a chance for that.
Also I think theres something wrong with the RPM's reading on my car and the dyno's because I was watching my tach (stock one) and would let off close to 6k but when we pulled up the dyno you can see me letting off around 4700rpms.
Anyways the car made lots of runs and they were all about the same.
10psi
AFR was mid 11's
0 knock
532rwhp
595rwtq
Last edited by HellRaiser; Aug 14, 2005 at 03:40 PM.
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Originally Posted by rozzyroz
ok, couple questions for ya... what all do you have done to run 10psi, and what happened to the torque under the curve? (im a noob to FI) and is this the manifold kit?
Not to sure what you mean by "torque under the curve"
Yes its the manifold kit.
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thanks for the reply. i was talking about your torque down low. most dyno sheets i see of even stock ls1's dont get below 300lbft of torque until about 2.5k rpm, and if they do its not by much. is the turbo that much of a restriction at lower rps? or is that because of the rpm on the dyno being off? its probably the way im reading it.
you have a very powerful setup.
you have a very powerful setup.
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yeah not to sure on that. Hopefully someone here will know. The runs were started at 2000rpms in 4th gear. I think I can get the torque up some by play with the Eboost, maybe get the turbo to spool up alittle faster and that would raise the torque down low.
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I might be able to get more torque down low to if I open the exhaust up. I run 3" all the way back to a GMMG catback. Maybe I should do a 4" with a turndown before the rear..
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The graph looks like it should to me
You say you let off near 6000, and that's what the graph shows. It looks to me that your car is gettin choked past 4500 RPM and the power is just falling right off. I've seen that in a lot of FI dyno graphs.
EDIT: although, something must be wrong, your HP and TQ curves never meet.
You say you let off near 6000, and that's what the graph shows. It looks to me that your car is gettin choked past 4500 RPM and the power is just falling right off. I've seen that in a lot of FI dyno graphs.
EDIT: although, something must be wrong, your HP and TQ curves never meet.
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That could be to. You think the stock heads, stock intake, stock TB could be whats wrong? Also the fact I run full exhaust prolly don't help it much.
Also now that I think about it my overboost is set at 9.5psi. So I might of been hitting that and then the boost would get cut in half there for dropping HP. I forgot to change it while I was on the dyno.
Also now that I think about it my overboost is set at 9.5psi. So I might of been hitting that and then the boost would get cut in half there for dropping HP. I forgot to change it while I was on the dyno.
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Originally Posted by HellRaiser
That could be to. You think the stock heads, stock intake, stock TB could be whats wrong? Also the fact I run full exhaust prolly don't help it much.
Also now that I think about it my overboost is set at 9.5psi. So I might of been hitting that and then the boost would get cut in half there for dropping HP. I forgot to change it while I was on the dyno.
Also now that I think about it my overboost is set at 9.5psi. So I might of been hitting that and then the boost would get cut in half there for dropping HP. I forgot to change it while I was on the dyno.
Originally Posted by EightBallTTA
EDIT: although, something must be wrong, your HP and TQ curves never meet.
i call bs on that graph. Hp and Tq always cross each other at 5,252 rpm. If they dont its a bs graph... Im not saying your full of it, im saying whoever you took it too didnt set it up right, which is another reason why the tq looks low at first and it drops off real fast.
Last edited by BubaGumpShrimp; Aug 14, 2005 at 12:39 PM.
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Stock cam, stock everything but 918 springs. I am sure the drop off is a result of boost going to 9.5psi and then dropping to 4psi because of the over boost function.
As for the curves not crossing I have no ideal whats up with that. I know I made a bunch of runs, could they mix/matched the runs maybe? Like those are 2 seperate runs? I know at one point the car was closer to 540hp and like 570tq but they add some more fuel at the last run and the power was down alittle and tq went up. I will have to call them and ask about it.
As for the curves not crossing I have no ideal whats up with that. I know I made a bunch of runs, could they mix/matched the runs maybe? Like those are 2 seperate runs? I know at one point the car was closer to 540hp and like 570tq but they add some more fuel at the last run and the power was down alittle and tq went up. I will have to call them and ask about it.
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Originally Posted by 30th t/a
yea your right........but only when the rwhp column and torque column are the same which they are not in this case. the rwhp goes to 550 and the rwtq goes to 650.