C5 Power Plate : added 20+ HP !!!
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Safety Car
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C5 Power Plate : added 20+ HP !!!
WoW.... :D
This was an isolated scenario at least with my vette. I was at a Dyno get-together and was recommended to get a C5 Power Plate .
Anyone heard of this Mod ?
Anyhow....it was guarenteed to add 7-8 hp to my numbers.
The result ??? ....I'll be sure to post actual graphs later :
Base Dyno before : 291 hp
Dyno test after plate : 314 hp !!! :eek: :cheers:
My hunch is that the biggest improvements with this "black magick" part is with the '97-'99 vettes before the intake re-design. The part installs in front of the intake air inlet just behind the MAF. I was told it lengthens the plenum and helps airflow. IT definitely did that !!!
Oh, and I can't remember the torque #'s but it added about 20+ on that, too ! :thumbs:
This was an isolated scenario at least with my vette. I was at a Dyno get-together and was recommended to get a C5 Power Plate .
Anyone heard of this Mod ?
Anyhow....it was guarenteed to add 7-8 hp to my numbers.
The result ??? ....I'll be sure to post actual graphs later :
Base Dyno before : 291 hp
Dyno test after plate : 314 hp !!! :eek: :cheers:
My hunch is that the biggest improvements with this "black magick" part is with the '97-'99 vettes before the intake re-design. The part installs in front of the intake air inlet just behind the MAF. I was told it lengthens the plenum and helps airflow. IT definitely did that !!!
Oh, and I can't remember the torque #'s but it added about 20+ on that, too ! :thumbs:
Le Mans Master
Joined: Mar 2002
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From: Flower Mound TX
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St. Jude Contributor
Re: C5 Power Plate : added 20+ HP !!! (YELLOHHH)
:skep:
And, if it doesn't work, you pull it off and hand it back to him. So far, no stock C5's have taken this back off once installed and dyno'd (that I'm aware of).
Drifting
Joined: Apr 2001
Posts: 1,779
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From: LOS ANGELES CA.
Re: C5 Power Plate : added 20+ HP !!! (verskel)
Ok,what is it ,how much does it cost AND is there any brochure on this item?That's a lot of horsepower for a bolt on mod.I am skeptical on this. :chevy :chevy :flag :chevy :chevy
Thread Starter
Safety Car
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Re: C5 Power Plate : added 20+ HP !!! (C5 StockSwap)
And, if it doesn't work, you pull it off and hand it back to him. So far, no stock C5's have taken this back off once installed and dyno'd (that I'm aware of).
It's not coming off my vette after seeing the Dyno !
Also, my vette, being an A4 was always a little uneven on hard accelerations - after the plate I've noticed a smoother acceleration with increased power from 3-4000 rpm all the way up to about 5500 rpm.
The Dyno shows my HP / Torque curves crossing at the 5300 mark..... so that's where I plan to do my shifting. :thumbs:
I'm not trying to get other C5 guys to buy this product..... I'm just posting my results on the board 'cuz now my '98 model is faster than an '03 from a dealer (not Z06's........yet) :D
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Le Mans Master
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From: Flower Mound TX
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St. Jude Contributor
Re: C5 Power Plate : added 20+ HP !!! (lost)
I requested more info from 21st Century muscle cars. Sounds like snake oil to me!
Racer
Joined: Mar 2002
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Re: C5 Power Plate : added 20+ HP !!! (lost)
Why do I have a feeling whoever is running the dyno is simply changing the correction factors when dynoing with the new part on...
You do know that a dyno is VERY easy to adjust to get it to read what you want righ?
Are the other dyno's around that are showing this gain that have nothing to do with this place?
You do know that a dyno is VERY easy to adjust to get it to read what you want righ?
Are the other dyno's around that are showing this gain that have nothing to do with this place?
Melting Slicks
Joined: Apr 2003
Posts: 2,989
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From: Columbus OH
Re: C5 Power Plate : added 20+ HP !!! (verskel)
verskel,
Just trying to clear things up about torque and hp crossing at "5300 rpm". In SAE units, torque and HP will ALWAYS cross at "5300 rpm". Why ? Because the formula is:
HP = torque * rpm / 5252
So, when rpm is at 5252, mathematically, HP = torque. This is just number and as you have known the units are different. This only works for horsepower and ft-lbs. This doesn't mean you have to shift at 5252 rpm to get the most out of the engine.
Shift points are a whole different complex story, maybe for next time :)
Just trying to clear things up about torque and hp crossing at "5300 rpm". In SAE units, torque and HP will ALWAYS cross at "5300 rpm". Why ? Because the formula is:
HP = torque * rpm / 5252
So, when rpm is at 5252, mathematically, HP = torque. This is just number and as you have known the units are different. This only works for horsepower and ft-lbs. This doesn't mean you have to shift at 5252 rpm to get the most out of the engine.
Shift points are a whole different complex story, maybe for next time :)
Thread Starter
Safety Car
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Re: C5 Power Plate : added 20+ HP !!! (verskel)
Okay,.... it's not snake oil - but it works better on some C5's than others.
I've been told that Z06 vettes with this mod "LOOSE" about 1-2 HP !!!
Also, the newer models with the re-designed intake gain only about 7-8 Hp.
Mine is a 1998 A4 C5 with a Blackwing, Smooth air coupler, & Borlas.... (no pre-cats on my model) nothing else.... then I added the plate.
*Keep in mine another factor which makes me skeptical about the amount of 'gain'..... It was Hot, hot, hot outside and the first pull was after my C5 had been in the sun for several hours !
The second pull was after plate install & the car was sitting in the shaded garage for about 1 1/2 hours. Soooooo it's probably only a 12-15hp gain when considering those factors. :chevy
I've been told that Z06 vettes with this mod "LOOSE" about 1-2 HP !!!
Also, the newer models with the re-designed intake gain only about 7-8 Hp.
Mine is a 1998 A4 C5 with a Blackwing, Smooth air coupler, & Borlas.... (no pre-cats on my model) nothing else.... then I added the plate.
*Keep in mine another factor which makes me skeptical about the amount of 'gain'..... It was Hot, hot, hot outside and the first pull was after my C5 had been in the sun for several hours !
The second pull was after plate install & the car was sitting in the shaded garage for about 1 1/2 hours. Soooooo it's probably only a 12-15hp gain when considering those factors. :chevy
Pro
Joined: Apr 2002
Posts: 726
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From: Denver CO
Re: C5 Power Plate : added 20+ HP !!! (verskel)
What did it look like!?! Was it hollow? Same inside diameter as upstream/downstream components? Have swirl chambers? Did it lean out the fuel mixture? Did you run the car for 40-60 miles so the PCM would adjust fuel delivery (like when changing other intake/exhaust components)?
Just curious. Sounds like an easy item to duplicate if it only effectively increases the length of the intake runner.
Thanks
:cheers:
[Modified by tn_c5owner, 11:52 AM 7/15/2003]
Just curious. Sounds like an easy item to duplicate if it only effectively increases the length of the intake runner.
Thanks
:cheers:
[Modified by tn_c5owner, 11:52 AM 7/15/2003]
Burning Brakes
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Re: C5 Power Plate : added 20+ HP !!! (verskel)
I've got a C5 Power Plate on my car as well. Before and after dyno numbers show a 8 rwhp / 9 rwtq gain. It's been on my car now for a couple of months...I did a search for it on the internet and didn't come up with anything. I don't think the people that make the thing even have a website.
I does look like voodoo...and snake oil, but all I can tell you is that it worked for me....cheapest hp gains I've had! We've joked about "stacking" them up to get REALLY big gains! :lol:
It has little or no improvement to the LS6 motors. We haven't found out for sure why.
Rick :cheers:
I does look like voodoo...and snake oil, but all I can tell you is that it worked for me....cheapest hp gains I've had! We've joked about "stacking" them up to get REALLY big gains! :lol:
It has little or no improvement to the LS6 motors. We haven't found out for sure why.
Rick :cheers:
Thread Starter
Safety Car
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Re: C5 Power Plate : added 20+ HP !!! (tn_c5owner)
What did it look like!?! Was it hollow? Same inside diameter as upstream/downstream components? Have swirl chambers? Did it lean out the fuel mixture?
However, my dad wants to install his & I'll be sure to post photos when I buy it for him. :cool: :cheers:
Drifting
Joined: Jul 2002
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From: mansfield Texas
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Re: C5 Power Plate : added 20+ HP !!! (Jigsaw)
I was going to install one in my Z06 and John Page told me to save my money, no real big gains on the LS6.
Just my .02
Darwin.
Just my .02
Darwin.
Burning Brakes
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Re: C5 Power Plate : added 20+ HP !!! (Jigsaw)
I ordered one. I'm goign to see if I can get a dyno this weekend. I'll also tune with LS edit. After I put my cam in I'll also pull out this swirl thing and see what happens to the HP numbers then.