LSx Budget Dyno Queen. Ls1 Rx7+turbo(s)
06-01-2015, 01:28 PM
#244
I don't see the issue and seems spot on for dynojet numbers given the conditions(while higher than some, but very comparable to other dynos of the same make). It's like you are pissed he is claiming a number that wouldn't agree with what your dyno would put down with the his car. If anything it seems like your dyno reads low as 750whp at 155mph not trying in a 6 speed don't jive in my head at all and I'm not some rookie to the track.
06-01-2015, 01:35 PM
#245
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Not to engage in the debate necessarily, but one thing I am wondering about is the issue of whether the horsepower calculators are giving effectively the average horsepower throughout the run needed to attain the trap speed or whatever?
Assuming the answer to this question is yes, I think it really could explain the difference in traps between these two RX7s. With the glide and a proper converter, especially with a smaller relative turbo, I would think that you could really be producing near peak horsepower for a lot more of the run than with a bigger set of twins that provide a peakier power band. No?
But then I really don't understand arguing about dyno numbers anyway. Dynos are supposed to be the means to an end via tuning, not the end itself...
I'm a
for both of your cars, so whatever. Lol
Assuming the answer to this question is yes, I think it really could explain the difference in traps between these two RX7s. With the glide and a proper converter, especially with a smaller relative turbo, I would think that you could really be producing near peak horsepower for a lot more of the run than with a bigger set of twins that provide a peakier power band. No?
But then I really don't understand arguing about dyno numbers anyway. Dynos are supposed to be the means to an end via tuning, not the end itself...
I'm a
for both of your cars, so whatever. Lol 
06-01-2015, 01:51 PM
#247
With what DA/temps, raceweight and gearing? Is that full boost every gear? If I read things right he has to shift to 5th due to 4.10 gears? I'm not really on anyones side, but just to better understand. I don't think the OP is coming off like he is bragging about his dyno queen or anything.
06-01-2015, 02:07 PM
#248
With what DA/temps, raceweight and gearing? Is that full boost every gear? If I read things right he has to shift to 5th due to 4.10 gears? I'm not really on anyones side, but just to better understand. I don't think the OP is coming off like he is bragging about his dyno queen or anything.
Temps around 80ish D/A was around 1500. 220ish CTS. 3180lbs with me in it. 3:55 Rear gear and Boost by time (1.5 seconds after 90% throttle)
Last edited by oscs; 06-01-2015 at 02:15 PM.
06-01-2015, 02:35 PM
#249
So if he is 200 lbs more, has a extra shift to 5th and slightly worse conditions does that not jive with the numbers he is saying? I'd have to go back and read it over but isn't he claiming low 700 range on that day? You know how hard it is to push a fragile drivetrain. I'd be happy with a 10.5 145 my first day out with the equipment he has.
06-01-2015, 03:03 PM
#250
I went 137 and change at 15psi at almost 4k lbs on a 2.2 60' leaving at 17 inches of vacuum
My car dynoed at 650 wheel on 14psi
Your trap seems about right for 15psi in a much lighter car with similar track conditions and 60'
I'm don't remember what power you said it was making at 15lbs of boost, but with the weight and speed it couldn't be much more than I'm making.
My car weighs a bunch more and had a lazier 60 and went a cpl mph slower
My car dynoed at 650 wheel on 14psi
Your trap seems about right for 15psi in a much lighter car with similar track conditions and 60'
I'm don't remember what power you said it was making at 15lbs of boost, but with the weight and speed it couldn't be much more than I'm making.
My car weighs a bunch more and had a lazier 60 and went a cpl mph slower
06-01-2015, 03:34 PM
#251
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From what I know, boost by time is not lowering your boost, its bringing it in more slowly. You still hit your target boost each gear. To clarify I am limited to 8 psi in 1,2, and switch mid way through 3rd via a solenoid on this run. Do you have to shift into 5th?
Either way, my car was 220 lbs heavier, and I was running 1 more PSI, and trapped almost 3mph faster, and assume the car was making 700-715whp that day. What am I missing?
Either way, my car was 220 lbs heavier, and I was running 1 more PSI, and trapped almost 3mph faster, and assume the car was making 700-715whp that day. What am I missing?
06-01-2015, 03:36 PM
#252
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06-01-2015, 04:02 PM
#253
From what I know, boost by time is not lowering your boost, its bringing it in more slowly. You still hit your target boost each gear. To clarify I am limited to 8 psi in 1,2, and switch mid way through 3rd via a solenoid on this run. Do you have to shift into 5th?
Either way, my car was 220 lbs heavier, and I was running 1 more PSI, and trapped almost 3mph faster, and assume the car was making 700-715whp that day. What am I missing?
Either way, my car was 220 lbs heavier, and I was running 1 more PSI, and trapped almost 3mph faster, and assume the car was making 700-715whp that day. What am I missing?
06-01-2015, 04:05 PM
#254
So if he is 200 lbs more, has a extra shift to 5th and slightly worse conditions does that not jive with the numbers he is saying? I'd have to go back and read it over but isn't he claiming low 700 range on that day? You know how hard it is to push a fragile drivetrain. I'd be happy with a 10.5 145 my first day out with the equipment he has.
06-01-2015, 04:21 PM
#255
I agree with you but I wonder how much he is loosing by going to 5th gear. That really pulls the motor out of the powerband. I would just like to see the difference with him being able to stay in 4th and let it pull. I think we would see quit a bit more MPH.
06-01-2015, 04:29 PM
#256
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That is one hell of a trap speed. Nice going. Great looking car as well!
Who gives a **** what the dyno says? I think there is WAY too much emphasis these days on dyno numbers, it is only a tool to help tune after all.
I put my junk on the dyno and it only showed 311 RWHP. I felt sick thinking I had seriously screwed up and the car was a dog even though it felt scary fast.
But going by injector duty cycle I should have easily been pushing 450+ RWHP at 10 PSI. When I ran the car against my bone stock C6 it absolutely DESTROYED my Vette, straight line anyway haha!
So do I believe the dyno, or do I believe what happened in the real world. My butt dyno says my Monte is making a lot of HP. So I am going with that and not worry about what the dyno number is. I mean c'mon, this is supposed to be fun right???!?!?
I don't really even know where I am headed with this rambling post other than to ask, why the heck are folks arguing??
Your car looks killer, it is fast, and it is fun. The video was really cool with the car leaving dark strips as you ran down the track. Have fun with it!
Who gives a **** what the dyno says? I think there is WAY too much emphasis these days on dyno numbers, it is only a tool to help tune after all.
I put my junk on the dyno and it only showed 311 RWHP. I felt sick thinking I had seriously screwed up and the car was a dog even though it felt scary fast.
But going by injector duty cycle I should have easily been pushing 450+ RWHP at 10 PSI. When I ran the car against my bone stock C6 it absolutely DESTROYED my Vette, straight line anyway haha!
So do I believe the dyno, or do I believe what happened in the real world. My butt dyno says my Monte is making a lot of HP. So I am going with that and not worry about what the dyno number is. I mean c'mon, this is supposed to be fun right???!?!?
I don't really even know where I am headed with this rambling post other than to ask, why the heck are folks arguing??
Your car looks killer, it is fast, and it is fun. The video was really cool with the car leaving dark strips as you ran down the track. Have fun with it!
06-01-2015, 04:54 PM
#258
I don't see the issue and seems spot on for dynojet numbers given the conditions(while higher than some, but very comparable to other dynos of the same make). It's like you are pissed he is claiming a number that wouldn't agree with what your dyno would put down with the his car. If anything it seems like your dyno reads low as 750whp at 155mph not trying in a 6 speed don't jive in my head at all and I'm not some rookie to the track.
Manual is a backhalff monster compared to an unlocked converter
3000lbs is funny without driver too, I bet i can even find where you where claiming it was 2700 if I cared to look
I have an actual LSX block, steel certified 8.50 cage, 7 gallons ic system, parachute, air system, meth system, full exhaust, all glass, steel hood. Blahdy blah and I am 3050lbs no driver
06-01-2015, 05:12 PM
#259
06-01-2015, 05:26 PM
#260
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Ah cool. Auto RWD turbo cars defiantly run better on track-your putting the power down basically the whole pass while I am constantly shifting and falling out of boost...rise...repeat. I am 100% sure my car would TRAP and ET better with an auto