RSK Member 340 Member For: 17y 2m 12d Gender: Male Posted 06/10/09 02:07 AM Share Posted 06/10/09 02:07 AM Hey people, Currently going from a 3" CAI in an airbox and wondering what the difference would be going to a 4" CAI? Has anyone done the change and what were the noteable differences? Advice from anyone that's gone from an under battery setup to a 3/4" CAI with airbox would be good aswell Link to comment Share on other sites More sharing options...
DesFlurane Member 351 Member For: 18y 7m 6d Gender: Male Posted 06/10/09 08:47 AM Share Posted 06/10/09 08:47 AM Went from under battery Plazmaman to 4" PW and made the same power. But will support more eventually. Link to comment Share on other sites More sharing options...
KIL-06L Member 155 Member For: 15y 6m 30d Gender: Male Location: Sydney Posted 17/02/10 10:58 AM Share Posted 17/02/10 10:58 AM RSK tried sending you a pm but your mailbox is full. pm me ASAP!! Link to comment Share on other sites More sharing options...
RSK Member 340 Member For: 17y 2m 12d Gender: Male Posted 17/02/10 09:28 PM Author Share Posted 17/02/10 09:28 PM Woops, all fixed up.I'm still running the 3" CAI in a plazmaman cold air box Link to comment Share on other sites More sharing options...
RUS531 RUS531 Donating Members 410 Member For: 18y 3m 5d Gender: Male Location: Emerald QLD Posted 19/02/10 11:09 PM Share Posted 19/02/10 11:09 PM I might get grilled by saying this but I would not put an under battery CAI in my car due to the fact that they look like they will be a pain to service and they are down too low and in front of the front wheel that kicks up dirt/dust and water. I've got the PW cai box and if it ain't recieving enough air I don't know what will. Am I correct in saying that you have to do some cutting to install the Under battery cai Link to comment Share on other sites More sharing options...
mattyb Donating Members 1,097 Member For: 16y 5m 11d Gender: Male Location: Gold Coast, QLD Posted 20/02/10 01:48 AM Share Posted 20/02/10 01:48 AM (edited) The UBP works well, and wasn't that hard to get to. it is enclosed really well too if you keep the undertray on your car. I have changed to a Rapid 4inch intake from the ubp, only cos I'm trying to 'over engineer' my car so I don't blow it up again, pmsl. That and I really wanna tidy up my engine bay... big car show on soon!It has actually crossed my mind to install a standard headlight on my drivers side, so it allows air through the 2 scollops from where the xr headlight would normally sit into my air box... I think it would look sh*tty but am gonna give it a go n e way, have a headlight from my work car I can experiment with it b4 installing my motor. Edited 20/02/10 01:51 AM by mattyb Link to comment Share on other sites More sharing options...
RSK Member 340 Member For: 17y 2m 12d Gender: Male Posted 22/02/10 12:32 AM Author Share Posted 22/02/10 12:32 AM Pics if you end up switching to the standard XT lights would be good, as that's not a half bad idea Link to comment Share on other sites More sharing options...
FAST-XR EVIL T Member 259 Member For: 15y 11m 16d Gender: Male Location: Liverpool NSW Posted 01/03/10 12:11 AM Share Posted 01/03/10 12:11 AM a 2.75" (70 mm) intake from from rapid/plazmaman is bigger than the inlet of the tubo, so is it really necessary to upgrade to a 4" intake? is the extra hassle of battery relocation not worth it? Link to comment Share on other sites More sharing options...
Nomis Member 231 Member For: 14y 7m 5d Gender: Male Posted 28/08/10 02:12 AM Share Posted 28/08/10 02:12 AM I would also like to know peoples thoughts on this but I am more talking about the differences in sound with the air box vs under battery cai Link to comment Share on other sites More sharing options...
fordboy1981 Donating Members 2,075 Member For: 21y 10m 7d Gender: Male Location: Sydney, NSW Posted 28/08/10 03:37 AM Share Posted 28/08/10 03:37 AM a 2.75" (70 mm) intake from from rapid/plazmaman is bigger than the inlet of the tubo, so is it really necessary to upgrade to a 4" intake? is the extra hassle of battery relocation not worth it?I agree... plus I don't really see what's wrong with stock airbox (with 2nd intake) and piping. it's a bit long, but the diameter should be enough... Link to comment Share on other sites More sharing options...
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