Induction & heat soak?

[andy_lang]

Hi all,

Just wondering on a quick filter related question? A Mate just had his TT remapped and was running a K&N 57i kit, they were a VAG specialst and said that the cone filter was useless at high revs due to the tiny engine bay and the filter sucking in the cold air.
He put his standard pannel filter on and noticed the performance difference straight away so now has ordered the K&N apollo.

Now................. Is this the same for my 01 Cupra?? Shall I get say the K&N Apollo / Pipercross Viper. Or is the 57i ok with no difference between them?

Using my car every day but it does alot of track days here and the Ring.

Thanks for the advice,

Andy

 

[greesha]

I love how everyone says they notice difference straight away

I would stick to good open cone filter + big cold air feed and maybe a heatshield.

This topic was done to death i guess. If you do a search you can probably find about 500 topics about this "induction war". If you check readers rides cars - and if you will look for the strongest, meaniest machines on this forum they will be all running open cone filters with cold air feed

Regards

Edit:
I don't want to make up things but i'm pretty sure that RobDon wasn't too happy about viper

 

[JamJay]

Greesha's not wrong! Get a big cold air feed in there and a large cone filter and you won't have a problem.

What alot of people seem to forget is that on a turbocharged car, it's the intercooler(s) that does the cooling so your main concern in relation to heatsoak should be with those. Really your friend should be putting the £100 odd for that silly Apollo filter towards a FMIC!

Edit: Tip for open cone: space the filter as far into the wing as possible to stop it drawing in hot air from the turbo. Placing an open cone right on the MAF housing isn't the best place for it.

 

[andy_lang]

OK thanks for that - main reason is that i currently have a Viper on mine which mate wants for his Clio, and other mate has a 57i for my car! So jus thinking of swapping them all around, but open cone with no heat shield (too lazy to make one). Just wondering if id loose my top end power.

Mates TT is 230bhp with open cone, and nearer 270 (at top revs) with original air box and K&N panel filter!!!

 

[andy_lang]

Sorry, FMIC?

 

[JamJay]

FMIC = Front mounted intercooler

I doubt that your friend is losing 40bhp through 'heat soak' alone, there's likely to be another issue. What was the ambient air temperature when the car was on the rolling road and what were the intake temps? Do any of you have VAG-COM so you can run airflow logs out on the road? He could have a failing MAF sensor.

Like I said though, a good FMIC will reduce heat soak dramitically.

 

[andy_lang]

Dono bout the ambient temperature at the time of the TT run, but even I could feel the difference from open cone to pannel.
My old car had open cone and a bugger off big cold air feed - faster i went, cooler it ran So may just give mate the Viper as its bright red (my cupra is of course yellow) and the K&N will suit cupra better too with the air feed!
End of Summer will be the FMIC (much easer to say!!) for me - or Twin Forge depending on finances after the Porsche Split Rims and Nurburgring trip!
But thanks for the help lads!