good results from 3" cai
07-15-2010, 08:05 PM
#1
good results from 3" cai
i went and ordered the 3" cai from zzp sense i have the tvs ordered and coming in. well the cai came in today so i figured i would just throw it on to see what it could do. well my boost is normally around 16psi and from putting the cai on it was reading 19psi. i had the k&n on before but something must have deff been wrong with it or that 3"cai is just a beast. i just wanted to share that and to see if anyone else has had good results from putting one on.
07-15-2010, 09:38 PM
#4
Senior Member
Join Date: 06-27-05
Location: southeast florida
Posts: 2,058
Likes: 0
Received 0 Likes
on
0 Posts
that is incorrect. Your intake before the supercharger is under vacuum also known as suction. A bigger intake would mean less restriction to an extent so that definitely vouse be the source of his increased boost.
The boost sensor is not in the intake and is after the supercharger.
07-15-2010, 11:52 PM
#10
Senior Member
iTrader: (18)
Join Date: 12-20-07
Location: Jeannette, PA
Posts: 3,055
Likes: 0
Received 0 Likes
on
0 Posts
The 'boost sensor' is the MAP sensor in the intake manifold. You didn't say you tuned for the change. That means your MAF scaling, VE table, etc are skewed pretty bad. Like 15% probably. That could be causing the PCM to think it's getting a whole lot more airflow that it really is. That is a slight possible explanation.
The stock electric boost gauge is inaccurate. A mechanical gauge would likely not show a gain. Another explanation.
Point in case, the intake should have no increase or decrease on your boost. Exhaust, headwork, cams, pulleys, blowers, etc, etc would increase or decrease your airflow (restrictions) and hence increase or decrease 'boost'.
Good luck with the TVS build! They're a lot of fun!
The stock electric boost gauge is inaccurate. A mechanical gauge would likely not show a gain. Another explanation.
Point in case, the intake should have no increase or decrease on your boost. Exhaust, headwork, cams, pulleys, blowers, etc, etc would increase or decrease your airflow (restrictions) and hence increase or decrease 'boost'.
Good luck with the TVS build! They're a lot of fun!
07-16-2010, 12:04 AM
#11
The 'boost sensor' is the MAP sensor in the intake manifold. You didn't say you tuned for the change. That means your MAF scaling, VE table, etc are skewed pretty bad. Like 15% probably. That could be causing the PCM to think it's getting a whole lot more airflow that it really is. That is a slight possible explanation.
The stock electric boost gauge is inaccurate. A mechanical gauge would likely not show a gain. Another explanation.
Point in case, the intake should have no increase or decrease on your boost. Exhaust, headwork, cams, pulleys, blowers, etc, etc would increase or decrease your airflow (restrictions) and hence increase or decrease 'boost'.
Good luck with the TVS build! They're a lot of fun!
The stock electric boost gauge is inaccurate. A mechanical gauge would likely not show a gain. Another explanation.
Point in case, the intake should have no increase or decrease on your boost. Exhaust, headwork, cams, pulleys, blowers, etc, etc would increase or decrease your airflow (restrictions) and hence increase or decrease 'boost'.
Good luck with the TVS build! They're a lot of fun!
and thanks, i cant wait to get it in and start messing with it
07-16-2010, 12:22 AM
#14
Senior Member
iTrader: (18)
Join Date: 12-20-07
Location: Jeannette, PA
Posts: 3,055
Likes: 0
Received 0 Likes
on
0 Posts
The reason is because they are both electric boost gauges. They are taking a reading from the car's sensors and not from itself. The difference would be caused by latency in the OBDII bus.
You need a mechanical boost gauge to get a pretty accurate boost reading. Most gauges in these cars don't respond fast enough. You'll hit the rev limiter before the tach says so lol.
Something like this... http://www.allecotec.com/product_inf...roducts_id=145
You need a mechanical boost gauge to get a pretty accurate boost reading. Most gauges in these cars don't respond fast enough. You'll hit the rev limiter before the tach says so lol.
Something like this... http://www.allecotec.com/product_inf...roducts_id=145
07-16-2010, 01:03 AM
#15
The reason is because they are both electric boost gauges. They are taking a reading from the car's sensors and not from itself. The difference would be caused by latency in the OBDII bus.
You need a mechanical boost gauge to get a pretty accurate boost reading. Most gauges in these cars don't respond fast enough. You'll hit the rev limiter before the tach says so lol.
Something like this... http://www.allecotec.com/product_inf...roducts_id=145
You need a mechanical boost gauge to get a pretty accurate boost reading. Most gauges in these cars don't respond fast enough. You'll hit the rev limiter before the tach says so lol.
Something like this... http://www.allecotec.com/product_inf...roducts_id=145
but damn i wish i would have seen that price before i spent around 200 on my boost gauge, u know where to get a cheap a/f gauge too???? wideband of course
07-16-2010, 07:33 AM
#16
Yes you could ....
It is due to the fact that he opened up some restriction on the intake side, and that restriction is now pushed to the exhaust side. This means his exhaust isnt flowing as well as it should.
Back in the day after people put intakes on their stock SS/SC's they all ranted and raved that they are now making more boost. It wasnt a good kind of boost increase, because all it meant was their exhaust setup wasnt flowing the amount of air the car was taking in.
You decrease boost when you install a better flowing exhaust. Not from installing an intake. Remember boost is a measure of restriction.
It is due to the fact that he opened up some restriction on the intake side, and that restriction is now pushed to the exhaust side. This means his exhaust isnt flowing as well as it should.
Back in the day after people put intakes on their stock SS/SC's they all ranted and raved that they are now making more boost. It wasnt a good kind of boost increase, because all it meant was their exhaust setup wasnt flowing the amount of air the car was taking in.
You decrease boost when you install a better flowing exhaust. Not from installing an intake. Remember boost is a measure of restriction.
Last edited by Staged07SS; 07-16-2010 at 09:06 AM. Reason: Automerged Doublepost
07-16-2010, 08:05 AM
#17
Senior Member
iTrader: (1)
Join Date: 07-27-09
Location: Concord, NH
Posts: 3,723
Likes: 0
Received 0 Likes
on
0 Posts
When I had my ZZP 3inch on my 06 I deff. noticed some power gain, not a spike in psi like 3 lbs but it deff. did something
For the person that asked it's 199.99 I believe
It is a very good Intake
For the person that asked it's 199.99 I believe
It is a very good Intake
07-17-2010, 04:15 PM
#18
Senior Member
iTrader: (1)
Join Date: 07-23-08
Location: Plymouth, WI
Posts: 1,104
Likes: 0
Received 0 Likes
on
0 Posts
Yes you could ....
It is due to the fact that he opened up some restriction on the intake side, and that restriction is now pushed to the exhaust side. This means his exhaust isnt flowing as well as it should.
Back in the day after people put intakes on their stock SS/SC's they all ranted and raved that they are now making more boost. It wasnt a good kind of boost increase, because all it meant was their exhaust setup wasnt flowing the amount of air the car was taking in.
You decrease boost when you install a better flowing exhaust. Not from installing an intake. Remember boost is a measure of restriction.
It is due to the fact that he opened up some restriction on the intake side, and that restriction is now pushed to the exhaust side. This means his exhaust isnt flowing as well as it should.
Back in the day after people put intakes on their stock SS/SC's they all ranted and raved that they are now making more boost. It wasnt a good kind of boost increase, because all it meant was their exhaust setup wasnt flowing the amount of air the car was taking in.
You decrease boost when you install a better flowing exhaust. Not from installing an intake. Remember boost is a measure of restriction.
Agreed you are shoving more air through the same size exhaust tube creating more restriction thus more boost is showing up on the gauge.
Thread
Thread Starter
Forum
Replies
Last Post