View Full Version : Improved breathing
Sort of related to the 130 ibiza BMC CDA thingy topic
here: (http://www.seatcupra.net/forums/showthread.php?s=&threadid=21019)
I was wondering if pulling additional air into the airbox via a 2.5" or 3" tube would help. The stock air inlet into the airbox seems rather small. I think raming more and possibly colder air into the stock airbox would help? any ideas.
BeezerDiesel
28-07-2003, 19:16
Dormouse has some plastic drainpipe going into his Cupra R Beezer as part of his SPT mods. - says it works well and I've seen it in the flesh and it's hard to spot until you actually look for it so it's quite stealthy.
Diesels don't respond as well to air filters as petrols do,mainly because there is very little in the air flow path as it is.They don't have a throttle to get around and with turbodiesels the turbo will suck as much as it needs anyway.We messed around on a rolling road with different filter types and arangements and even with NO air filter there was only a slight increase in power,but the tourque curve was way out flat spots everywhere.It seems that they need a little bit of resistance in the air flow to help keep the power constant.The only big differance was when the air temp went up so getting cool air in would work more than getting more warm air in i.e. induction kits.
I guess that means bringing in more air into the airbox (via larger aluminum tubing) would really do nothing then? Or maybe just quicker spooling and lower turbo intake temperatures?
I really wasn't looking to get a dynatwist, BMC CDA or something similar mainly because of the extra noise created ??
The whole idea behind this was the performance loss (definitely feel the difference) during the daytime drive into Lisbon (outside temps around 29-32ºC) and on the return trip back home (19-20ºC). The difference is pretty amazing actually.
Since I live in a hotter climate I'm just looking to keep the performance as constant as possible.
BeezerDiesel
29-07-2003, 04:29
Originally posted by prc
Since I live in a hotter climate I'm just looking to keep the performance as constant as possible.
No need to rub it in!
Been back from Ibiza just over a week and not seen the Sun since....
If the air is coming from outside the engine bay then it's better than from inside.Being the lucky chap you are and live in the sun (*&******@@*) you really need to look at charge coolers
hummm it's nice and sunny and 37ºC right now. I think go to the beach and grab some beers..... :p
Only kidding!;) Well it is actually 37º outside right now.
What's a charge cooler? I was thinking of speaking to Pete from Forge about a better capacity FMIC. Is it the same thing?
it uses water to cool the inlet air, rather than an in an intercooler which uses air to cool the compressed inlet air. much more efficient at cooling.
Have not really heard of them. Will have to do some searching into this. Wouldn't a more bigger intercooler do the same.
Yes and NO. It would work but if warm air is being passed thro'it it wouldn't be as efficient as a charge cooler,
it may be cheaper to look into a water spray,this does exactly as it says on the tin.
It sprays cold water onto the intercooler and as the water evaporates it cools the cooler...
Or the ultimate is aquamist this sprays a very fine mist inside the intercooler directly into the air stream so really cooling things down..
Failing that you could swap houses with me!! it's about 19 degrees with a slight drizzle the charge temps would be way down :cheers: :D
agree with jason here, a bigger intercooler isnt gonna be as efficient as a chargecooler.
Originally posted by jason leese
Failing that you could swap houses with me!! it's about 19 degrees with a slight drizzle the charge temps would be way down :cheers: :D
LOL
Thanks but no thanks!:D
Thanks for the information guys. Will be looking into this.