CAI on a SS
CAI on a SS OK, I am one of those that want to keep the functionality of the hood induction. I am also thinking about putting on a CAI. I talked to SLP about their product and whether to seal up the front of the box which their CAI product includes a provision to do that.
It was also said that on the SS the induction from the hood is best up to (lets say) 50 MPH and then the induction from the CAI really kicks in and outperforms the hood. From what I am told this is due to the way the air stream reacts to the nose of the car and as speed increases the hood induction rapidly loses its effectiveness. SLP suggested installing the CAI while leaving the front of the box open to receive the maximum air flow from the hood below 50 MPH and then above 50 MPH air would be dominant from the CAI.
I have read a post that said delivering air from 2 different directions (as described above) to the filter would cause the air flow to become upset and hurt air delivery to the intake. Can I get other experiences or comments? I am probably trying to over think this whole thing but it is worth a look to see what you all have to say.
It was also said that on the SS the induction from the hood is best up to (lets say) 50 MPH and then the induction from the CAI really kicks in and outperforms the hood. From what I am told this is due to the way the air stream reacts to the nose of the car and as speed increases the hood induction rapidly loses its effectiveness. SLP suggested installing the CAI while leaving the front of the box open to receive the maximum air flow from the hood below 50 MPH and then above 50 MPH air would be dominant from the CAI.
I have read a post that said delivering air from 2 different directions (as described above) to the filter would cause the air flow to become upset and hurt air delivery to the intake. Can I get other experiences or comments? I am probably trying to over think this whole thing but it is worth a look to see what you all have to say.
I've always thought the hood was cool and all but not of much value as far as functionality goes. This is especially true in the summer when the hood is far above ambient temps. It just heats the air before it goes through the filter. My solution was just to put on an SSRA kit. I can block off the hood or let it flow. I haven't noticed much difference either way so I suspect you would be fine to use both the hood and CAI.
Originally Posted by MISERICORDIA
I've always thought the hood was cool and all but not of much value as far as functionality goes. This is especially true in the summer when the hood is far above ambient temps. It just heats the air before it goes through the filter. My solution was just to put on an SSRA kit. I can block off the hood or let it flow. I haven't noticed much difference either way so I suspect you would be fine to use both the hood and CAI.
Looking back the older muscle cars (i.e. older GTO’s) the hood scoop sat right over the intake (unlike the SS) but with the nose of the car like a box I doubt it was very effecting even at slow speeds.
I see you said that you have not really noticed a difference with the front of the air box sealed off or open. I wounder if anyone has actually measured on the dyno if there is a difference? Well as I read in another thread the hood is up normally so I guess a dyno test wouldn't work unless the hood was left down. So I guess two similar trips down the 1/4 mile would have to be done (one run sealed and the second run) but driver error could draw unreliable info. I guess if you say the heck with it and go forced induction you don't have to worry about anything accept dropping a bunch of cash.
Launching!
Joined: Nov 2001
Posts: 201
Likes: 0
From: Almonte, Ont. Canada
If you left the front of the airbox open for the hood airflow how would you get the benefit of the CAI? As the airbox isn't closed off the air from the CAI could flow out the opening at the front of the box wouldn't it? The SS hood doesn't seal to the air box so without closing the front of the airbox I would think you would lose the benefitof the CAI.
When I got my FTRA I just sealed the front of the airbox to maximize airflow from the Fast-toys setup.
When I got my FTRA I just sealed the front of the airbox to maximize airflow from the Fast-toys setup.
Launching!
Joined: Nov 2001
Posts: 201
Likes: 0
From: Almonte, Ont. Canada
To determine the benefit of any of these CAI systems you should try the test illustrated on http://www.installuniversity.com/ins...sity/index.htm
Go into their Tech Library and read the test results of the FTRA. They were able to determine an increase in VE through the use of that CAI over a stock airbox. If you want to determine the delta between a CAI and the SS hood you can do the same thing.
If you read further on the article it also states "You have to be sure to seal the kit extremely well to gain the most you can from it"
Go into their Tech Library and read the test results of the FTRA. They were able to determine an increase in VE through the use of that CAI over a stock airbox. If you want to determine the delta between a CAI and the SS hood you can do the same thing.
If you read further on the article it also states "You have to be sure to seal the kit extremely well to gain the most you can from it"
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Originally Posted by beaSSt
To determine the benefit of any of these CAI systems you should try the test illustrated on http://www.installuniversity.com/ins...sity/index.htm
Go into their Tech Library and read the test results of the FTRA. They were able to determine an increase in VE through the use of that CAI over a stock airbox. If you want to determine the delta between a CAI and the SS hood you can do the same thing.
If you read further on the article it also states "You have to be sure to seal the kit extremely well to gain the most you can from it"
Go into their Tech Library and read the test results of the FTRA. They were able to determine an increase in VE through the use of that CAI over a stock airbox. If you want to determine the delta between a CAI and the SS hood you can do the same thing.
If you read further on the article it also states "You have to be sure to seal the kit extremely well to gain the most you can from it"
Thanks for the link and I will check it out. I did read up on the lid portion sometime ago at the university link but not the portion pertaining to CAI. I will say this before looking up the link in that I hope what they said is from testing and not due to what the manufacture said needed to be done.
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Originally Posted by beaSSt
If you left the front of the airbox open for the hood airflow how would you get the benefit of the CAI? As the airbox isn't closed off the air from the CAI could flow out the opening at the front of the box wouldn't it? The SS hood doesn't seal to the air box so without closing the front of the airbox I would think you would lose the benefitof the CAI.
When I got my FTRA I just sealed the front of the airbox to maximize airflow from the Fast-toys setup.
When I got my FTRA I just sealed the front of the airbox to maximize airflow from the Fast-toys setup.
Just put a FTRA on my car today. Pulls MUCH better on the highway than it used to. It seriously feels like 15 HP at highway speeds. I blocked off the front of the airbox on my SS, FYI. That hood has never been proven to make more power over a stock Z28 hood to my knowledge, someone can feel free to correct me if I'm wrong.
Originally Posted by MikeG
Just put a FTRA on my car today. Pulls MUCH better on the highway than it used to. It seriously feels like 15 HP at highway speeds. I blocked off the front of the airbox on my SS, FYI. That hood has never been proven to make more power over a stock Z28 hood to my knowledge, someone can feel free to correct me if I'm wrong.
Maybe if you enlarged the intake area on the hood (i.e. WRX STI) you would see some gains.
i have an ssra on mine (screw the slp it's crap) and i also sealed the hood with the weatherstripping they gave because i figured at higher speeds the air coming in from the bottom would be so forceful that it might leak out through gap in the box where the hood air goes to.
