First Nitrous Dyno Numbers!
Originally Posted by XTrooper
I got the car dynoed yesterday while at Corvettes @ Carlisle.
These numbers are SAE with the converter unlocked, spraying a 75 shot to 6000 rpm. I'll likely increase my upper rpm limit to 6200 rpm, so I should see slightly bigger numbers next time, but these initial ones aren't too bad.
441 rwhp @ 6000 rpm 418 rwtq @ 5100 rpm
These numbers are SAE with the converter unlocked, spraying a 75 shot to 6000 rpm. I'll likely increase my upper rpm limit to 6200 rpm, so I should see slightly bigger numbers next time, but these initial ones aren't too bad.
441 rwhp @ 6000 rpm 418 rwtq @ 5100 rpm
I would think the tq would be higher
Nice #'s though
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From: NE PA
Originally Posted by 2001 Red Coupe Bandit
Just back in town after 11 days. I am going to get the kit put on next week.
Gary
Nice #'s
Gary
Nice #'s
Good luck with your installation!
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From: NE PA
Originally Posted by Drew778
I would think the tq would be higher
Nice #'s though
Nice #'s though
At what rpm do you spray? If its late in the game you'll keep the tq down, which can save parts But if you are spraying at 3,000rpm on a WS etc, then its low...who cares about a dyno # as long as the track times are there anyway!
But if you are spraying at 3,000rpm on a WS etc, then its low...who cares about a dyno # as long as the track times are there anyway! Thread Starter
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From: NE PA
Originally Posted by CAT3
At what rpm do you spray? If its late in the game you'll keep the tq down, which can save parts But if you are spraying at 3,000rpm on a WS etc, then its low...who cares about a dyno # as long as the track times are there anyway!
But if you are spraying at 3,000rpm on a WS etc, then its low...who cares about a dyno # as long as the track times are there anyway!
Originally Posted by XTrooper
Ahh...........that's the answer! It was set at 3800 rpm the day I dynoed the car. In real life, I'm actually spraying from ~4800 rpm (what my engine speed drops to during a WOT shift) to 6100 rpm which is my upper rpm window point. My shift points are set at 6400 rpm.
Robert
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From: NE PA
Originally Posted by Robert56
I don't understand why you would be spraying from 4800 to 6100?
Robert
Robert
Originally Posted by XTrooper
My engine speed never drops below 4800 rpm between shifts at WOT, so it's impossible for me to spray below that rpm no matter what I have the lower rpm window point set at. My tranny shifts at 6400 rpm, so I have the nitrous cutting off at 6100 rpm as a safety cushion so I don't inadvertently spray through my shifts.
Robert
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From: Dallas, TX
FWIW,
I have a 4000 stall and my shift extentions (where the rpm's drop down to between shifts) is 5,200 and mine shifts at 6,500 so I am not sure where to set mine either.
I have a stock tranny, so spraying through shifts is a sure fire way to blow that tranny up fast. I think prolonged use of nitrous will blow a stock tranny anyway, but through the shift will get you there faster.
I was going to set my BMN switch at, hmmm I don't know. 4,000 and 6,400. I haven't got that far in the install yet.
Thanks
Gary
I have a 4000 stall and my shift extentions (where the rpm's drop down to between shifts) is 5,200 and mine shifts at 6,500 so I am not sure where to set mine either.
I have a stock tranny, so spraying through shifts is a sure fire way to blow that tranny up fast. I think prolonged use of nitrous will blow a stock tranny anyway, but through the shift will get you there faster.
I was going to set my BMN switch at, hmmm I don't know. 4,000 and 6,400. I haven't got that far in the install yet.
Thanks
Gary
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From: NE PA
Originally Posted by Robert56
Ok, I understand the reasoning put forth here. However, why are you not spraying lower coming out of the hole on launch. Every tenth removed in your 60'er will be two tenths on your top end. If you want to be fast and quick, spray that bad boy outa the hole.
Robert
Robert
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From: Dallas, TX
So the 1st gear lock out works pretty good? That's the same unit I am getting.
Is it easy to change the dials on the rpm?
Trooper, PLEASE tell me what it FEELS like? Are you spraying 100 or stilla 75? What exactly does it feel like and how does it come on?
Does your car FEEL MUCH faster, or is it deceptive speed?
Thanks
Gary
Is it easy to change the dials on the rpm?
Trooper, PLEASE tell me what it FEELS like? Are you spraying 100 or stilla 75? What exactly does it feel like and how does it come on?
Does your car FEEL MUCH faster, or is it deceptive speed?
Thanks
Gary
Originally Posted by XTrooper
Actually, I'm not spraying in 1st gear at all. I'm using the BMN rpm window switch's 1st Gear Lockout feature and the reason I'm doing this is because I just got to the point where I can dead-hook (with good track prep) and I don't want to lose this. I think whatever I "could" gain with the nitrous would be lost in wheelspin and me having to get out of the throttle to keep the car going in a straight line.
Just my opinion, especially with you only doing a 75 shot (at this time!). Anything higher and being on the side of "caution" is probably a good thing; less items broke! Either way you are having fun and that's the name of the game!!!!
Out the hole here with a 100 shot ws at 3000rpm, and my 60'ers have come into the 1.5x's so far, and that is a 5200rpm launch. will launch higher next year. A little spin will keep ya from breaking stuff. (315 dr)
Redcoupe, 4000 stall on the juice for a street/strip nitrous car is a little much, imo. Now if you were reving to 10 grand and had 5.xx gears then ok?
Robert
Redcoupe, 4000 stall on the juice for a street/strip nitrous car is a little much, imo. Now if you were reving to 10 grand and had 5.xx gears then ok?
Robert
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From: Dallas, TX
Yeah I know it is a bit much, but a 4,000 stall is what I got, so until my tranny blows out I am stuck with it. If my tranny (when my tranny I should say) blows, I will look at getting a lower stall TC, like a 3,600.
Also, I see X-Trooper has a SY3500 with a 1.68 STR (Stall Tourqe Ratio) and I have an SS4,000 with a 2.60 STR. My converter is much tighter, but also has 500 rpm's more stall.
Gary
Also, I see X-Trooper has a SY3500 with a 1.68 STR (Stall Tourqe Ratio) and I have an SS4,000 with a 2.60 STR. My converter is much tighter, but also has 500 rpm's more stall.
Gary
Originally Posted by 2001 Red Coupe Bandit
Yeah I know it is a bit much, but a 4,000 stall is what I got, so until my tranny blows out I am stuck with it. If my tranny (when my tranny I should say) blows, I will look at getting a lower stall TC, like a 3,600.
Also, I see X-Trooper has a SY3500 with a 1.68 STR (Stall Tourqe Ratio) and I have an SS4,000 with a 2.60 STR. My converter is much tighter, but also has 500 rpm's more stall.
Gary
Also, I see X-Trooper has a SY3500 with a 1.68 STR (Stall Tourqe Ratio) and I have an SS4,000 with a 2.60 STR. My converter is much tighter, but also has 500 rpm's more stall.
Gary
Robert
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From: Dallas, TX
Thanks Robert. I will see how it does on my 4,000 stall 
. Oh well, NA I will still be a monster
X-Trooper.............I saw a comment on Corvette Forum about not getting your TPS Switch to work.
What Happened? I bought one after the fact just because my installer said they were easier to work with. I am installingn next week.
What specifically was your problem with not getting it to work?
Gary
. Oh well, NA I will still be a monster X-Trooper.............I saw a comment on Corvette Forum about not getting your TPS Switch to work.
What Happened? I bought one after the fact just because my installer said they were easier to work with. I am installingn next week.
What specifically was your problem with not getting it to work?
Gary
