CMCC Delete Plates, What's the verdict?
I asked Brent at Brenspeed and this was his response:
We have ran the plates on a lot of cars and here is our findings. If you
have stock gears in the car you are going to notice a loss in low end torque at part throttle. If you don't race the car a lot stay away from the plates.
If you have lower gears you will not notice the loss of part throttle low
end near as much.
The plates add power at high rpm and only at wide open throttle. We do see gains on the dyno of around 5 to 6 rwhp and that normally is from 5000 to 6000 rpms.
The plates should be one of the very last mods somebody does and we strongly suggest having low gears to take advantage of them.
Having that said, I think I will wait since I drive my car daily and have only stock 3:55's.
We have ran the plates on a lot of cars and here is our findings. If you
have stock gears in the car you are going to notice a loss in low end torque at part throttle. If you don't race the car a lot stay away from the plates.
If you have lower gears you will not notice the loss of part throttle low
end near as much.
The plates add power at high rpm and only at wide open throttle. We do see gains on the dyno of around 5 to 6 rwhp and that normally is from 5000 to 6000 rpms.
The plates should be one of the very last mods somebody does and we strongly suggest having low gears to take advantage of them.
Having that said, I think I will wait since I drive my car daily and have only stock 3:55's.
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From: Medina county, OH
I don't think that's accurate- I'm pretty sure the ports are the same size between the two versions. Don't you reuse the factory rubber gaskets on the Steeda versions? You reuse them on the Ford versions and I would think that the opening is the same size.
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It would depend on how thick each of the walls are. Also, is there room for them to be taller? If not, then it definitely depends on the thickness of the walls.
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From: Spangdahlem Air Base Germany
This is from Steeda's site, which could be interpreted a few different ways. Although I based my comment on a previous thread where someone had actually measured them. Of course I have no idea where the thread is now. 
"Steeda's plates are larger than the O.E. plates and are a better port match to the intake manifold and cylinder heads than the original plates, reducing turbulence and improving airflow in the intake path for more horsepower than when using disassembled factory plates."
"Steeda's plates are larger than the O.E. plates and are a better port match to the intake manifold and cylinder heads than the original plates, reducing turbulence and improving airflow in the intake path for more horsepower than when using disassembled factory plates."
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From: Medina county, OH
I'm not trying to argue but I think that Steeda is blowing smoke on this and maybe making more of an excuse for why their product is 3x higher priced.......
I admit that I've never had a Steeda set for comparison, but:
1) I highly doubt their plates are taller; if they were, the entire intake would sit up higher and therefore closer to the hood. I wouldn't think that they would be shorter either, therefore lowering the entire intake.
2) If their ports are larger, they can't be much larger due to the plates still using the factory mounting holes. Plus, even if they are larger, I don't see how it would have any advantage because as you can tell by the picture below, the Ford plate's openings are plenty big and actually are slightly larger than the intake tracks anyhow.
BTW, that green gasket around each opening is the one I referred to earlier. Unless Steeda's have a new engraving around the ports and come with new replacement gaskets, you likely reuse these gaskets on them too which leads me to believe that they're the same size.
Tom
I admit that I've never had a Steeda set for comparison, but:
1) I highly doubt their plates are taller; if they were, the entire intake would sit up higher and therefore closer to the hood. I wouldn't think that they would be shorter either, therefore lowering the entire intake.
2) If their ports are larger, they can't be much larger due to the plates still using the factory mounting holes. Plus, even if they are larger, I don't see how it would have any advantage because as you can tell by the picture below, the Ford plate's openings are plenty big and actually are slightly larger than the intake tracks anyhow.
BTW, that green gasket around each opening is the one I referred to earlier. Unless Steeda's have a new engraving around the ports and come with new replacement gaskets, you likely reuse these gaskets on them too which leads me to believe that they're the same size.
Tom
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From: New Carlisle, Ohio (20 miles north of Dayton)
I'm not trying to argue but I think that Steeda is blowing smoke on this and maybe making more of an excuse for why their product is 3x higher priced.......
I admit that I've never had a Steeda set for comparison, but:
1) I highly doubt their plates are taller; if they were, the entire intake would sit up higher and therefore closer to the hood. I wouldn't think that they would be shorter either, therefore lowering the entire intake.
2) If their ports are larger, they can't be much larger due to the plates still using the factory mounting holes. Plus, even if they are larger, I don't see how it would have any advantage because as you can tell by the picture below, the Ford plate's openings are plenty big and actually are slightly larger than the intake tracks anyhow.
BTW, that green gasket around each opening is the one I referred to earlier. Unless Steeda's have a new engraving around the ports and come with new replacement gaskets, you likely reuse these gaskets on them too which leads me to believe that they're the same size.
Tom
I admit that I've never had a Steeda set for comparison, but:
1) I highly doubt their plates are taller; if they were, the entire intake would sit up higher and therefore closer to the hood. I wouldn't think that they would be shorter either, therefore lowering the entire intake.
2) If their ports are larger, they can't be much larger due to the plates still using the factory mounting holes. Plus, even if they are larger, I don't see how it would have any advantage because as you can tell by the picture below, the Ford plate's openings are plenty big and actually are slightly larger than the intake tracks anyhow.
BTW, that green gasket around each opening is the one I referred to earlier. Unless Steeda's have a new engraving around the ports and come with new replacement gaskets, you likely reuse these gaskets on them too which leads me to believe that they're the same size.
Tom
Scott
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From: Carnegie, PA
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comment on the CMCV or whatever- way back when, during the months of waiting for my car, I did a lot of reading- dunno where I read it, but, had read the purpose of those butterflies was to divert 'low flow' volumes at small throttle opening to concentrate/accelerate airflow and direct it towards the fuel injector tip to add some swirl/atomization/whatever, mostly to aid in emissions...this and the annoying delay at lifting the throttle(to help prevent high vacuum conditions from increasing oil consumption slightly- even with 5w20) I guess were a couple of the tweaks that while not hindering performance too bad, still helped aid in keeping emissions down...supposedly these are some of the cleanest engines around, yet still run pretty freakin good 
I imagine the plates do obstruct a bit of airflow, but kinda gotta guess a lot of the gains are from a good tune- would be neat to see some before/after from the exact same car(same tweaked basic tune- except for the deletes) to see the gains.
I dunno, but would have to guess the engine *might* run just a tad rougher(and a LOT 'dirtier' emissions wise) until warm without the plates, but all the above is just my 'bench racing' opinion
Question: My car has a big change in sound at somewhere around 2500 rpm- always assumed due to these plates opening up, allowing the intake to growl more, but wondered if it also could be due to the cam advance/retard shift...anyone with the deletes notice if their car sounds louder under 2500 rpm, and if the sound still shifts tone around there???
I imagine the plates do obstruct a bit of airflow, but kinda gotta guess a lot of the gains are from a good tune- would be neat to see some before/after from the exact same car(same tweaked basic tune- except for the deletes) to see the gains.
I dunno, but would have to guess the engine *might* run just a tad rougher(and a LOT 'dirtier' emissions wise) until warm without the plates, but all the above is just my 'bench racing' opinion
Question: My car has a big change in sound at somewhere around 2500 rpm- always assumed due to these plates opening up, allowing the intake to growl more, but wondered if it also could be due to the cam advance/retard shift...anyone with the deletes notice if their car sounds louder under 2500 rpm, and if the sound still shifts tone around there???
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Joined: October 8, 2005
Posts: 12,395
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From: Medina county, OH
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From: New Carlisle, Ohio (20 miles north of Dayton)
Thanks Scott- I just don't think that it makes sense for someone to pay 2 or 3 times as much for a different version of a component that will end up with the same result. Steeda makes great stuff for sure, but this is one item where it absolutely makes the most sense to buy the FRPP piece.
Scott
I asked Brent at Brenspeed and this was his response:
We have ran the plates on a lot of cars and here is our findings. If you
have stock gears in the car you are going to notice a loss in low end torque at part throttle. If you don't race the car a lot stay away from the plates.
If you have lower gears you will not notice the loss of part throttle low
end near as much.
The plates add power at high rpm and only at wide open throttle. We do see gains on the dyno of around 5 to 6 rwhp and that normally is from 5000 to 6000 rpms.
The plates should be one of the very last mods somebody does and we strongly suggest having low gears to take advantage of them.
Having that said, I think I will wait since I drive my car daily and have only stock 3:55's.
We have ran the plates on a lot of cars and here is our findings. If you
have stock gears in the car you are going to notice a loss in low end torque at part throttle. If you don't race the car a lot stay away from the plates.
If you have lower gears you will not notice the loss of part throttle low
end near as much.
The plates add power at high rpm and only at wide open throttle. We do see gains on the dyno of around 5 to 6 rwhp and that normally is from 5000 to 6000 rpms.
The plates should be one of the very last mods somebody does and we strongly suggest having low gears to take advantage of them.
Having that said, I think I will wait since I drive my car daily and have only stock 3:55's.
Wow, I'm glad I read that post!
I'll wait until I get some serious mods before doing this.
Has anyone thought of modifying the original plates? I.E. removing the butterflies?
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People have removed the butterflies, I'm sure it's been mentioned on here before. The FRPP plates are so cheap, though, why go through all that trouble? I have the Steeda plates, and my neighbor has the FRPP plates. The Steeda ports are larger, but if you're running stock heads you will NOT notice a difference. Do not buy the Steeda plates just because they have bigger ports.
If I had it to do over again, I'd get the FRPP plates, just because of the price. The only reason I got the Steedas was because they were the only one out at the time and I got a KILLER deal on a used set.
FWIW, it's been proven time and time again by now that this is a VERY worthwhile mod. With a good tune, these plates GAIN power in low rpm and all over the power band. I already had a good tune on my car before I got my delete plates, and I just installed the plates with an updated tune.... I picked up 1.2 mph in the 1/8 mile. My car still had 3.55 gears at the time. Emissions didn't drop, I still averaged over 23 mpg. Driveability and low-end power weren't hurt at all.
This is one of THE BEST mods you can do to your 3V, especially for the money. I'm actually SHOCKED that this is still a debate for some people, considering the MASS of 3V guys that have this mod with nothing but good reviews (for daily driving) & track results.
If I had it to do over again, I'd get the FRPP plates, just because of the price. The only reason I got the Steedas was because they were the only one out at the time and I got a KILLER deal on a used set.
FWIW, it's been proven time and time again by now that this is a VERY worthwhile mod. With a good tune, these plates GAIN power in low rpm and all over the power band. I already had a good tune on my car before I got my delete plates, and I just installed the plates with an updated tune.... I picked up 1.2 mph in the 1/8 mile. My car still had 3.55 gears at the time. Emissions didn't drop, I still averaged over 23 mpg. Driveability and low-end power weren't hurt at all.
This is one of THE BEST mods you can do to your 3V, especially for the money. I'm actually SHOCKED that this is still a debate for some people, considering the MASS of 3V guys that have this mod with nothing but good reviews (for daily driving) & track results.
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Question On Charge Plates
OK, Ford Racing sells them around 99.00 a pair, STEEDA sells them there own for 299.99, what's the difference besides the name? Do the STEEDA one's work better or are you paying for a name?
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From: Central Coast, CA
I think its purpose is to keep the port velocity up at the lower speeds when the other port is blocked which is more of a performance / efficency / response improvement in that speed range.
Can't they be gutted from the original plate?
Can't they be gutted from the original plate?
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FORD RACING CMCV Delete's
Just got off the Phone with a TECH Support Rep from Ford Racing, They are no longer making them and told me to call STEEDA to get them. I cannot see paying 200.00 more just for a name.
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From: SoCal