My new HPS post MAF tubes installed

Methodical4u

aside from color... why would anyone switch from one post maf tube type to another? Aside from spending more money they didn't need to... I can't believe it would possibly make any extra power.

Pelican170

The reason I was curious about the Mishimoto ones is because they claim to prevent against heat, and the others dont mention that. If that were true, id buy them even though i have the HPS tubes.... Still no evidence that they actually do help with heat...

Masa

Finally got around to installing these as well as new panel filters. Whole process took about 45 mins including removal of the strut bar.

They have been on the car for about a week now and there is noticeable increase in throttle response between 3k-5k rpm as well as a slightly louder intake volume/noise. The car does seem more eager to pull across most of the rpm range as well.

Just to make sure I wasn't suffering from a placebo effect and not making things up I switched cars for an afternoon with a fellow forum member (SolidKatfish) and the only difference between our cars are the intake and filters. Granted, the butt dyno is not accurate enough to measure tangible gains, it does feel slightly better. He also noted better throttle response and better pull across the rev range. We both also agreed his car felt more flat in the mid range so either we're both going crazy or there is a somewhat small but noticeable difference once the tubes+filter combo are installed.



pics:

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Methodical4u

I have no doubt that you have gotten some gains with your set-up. So far however it's been proven that the G3's are the only intakes to make a big power difference 15-20 whp.

Pelican170

Yea and heat soak from the metal pipings ive heard of lately...

68cam454

I have the ability to measure my intake air temperature using my Kenwood 9980HD head unit. The stock setup and the HPS setup are both excellent cold air intakes. On a hot day and sitting idle with the engine up to full operating temperature, the intake temps go fairly high at around 110 to 120 degrees. As soon as I start moving the temperatures drop dramatically and once I'm driving at more than about 30MPH, the temperatures are within a few degrees of ambient temperature. Any of the silicone based tubes should perform identically unless they have extremely thin sidewalls.

I am very curious to see how hot the temperature gets with the G3 intake since the intake pipes are metal and much longer, which should be terrible for heat soak. I would also expect the temperature drop to occur much slower once you are moving due to the amount of mass that need to be cooled with those tubes. Hopefully someone with the ability to measure intake air temps will get G3's soon so we can compare temperatures. I have a feeling that dyno numbers and real world driving numbers will be dramatically different.

Pelican170

This is good info, thanks. Would you think that a Silicone tube that is thicker would help the temperatures more or waste of money to switch?

68cam454

I doubt there would be much difference unless is was substantially thicker, but that would make it very difficult to install. Silicone does not conduct heat well, so as soon as air velocity increases, the internal temperatures of the tubes cool quickly regardless of how hot they feel on the outside. I am curious to see how long it takes the long tube intakes with metal piping to recover from heat soak. I expect it to take much longer for the temperatures to drop and they probably will never get as cold as the stock or HPS temperatures due to the long metal pipes. The stock positioning of air draw is ideal for getting cold air in without water ingestion issues.

Maila87

Today received Z1 hoses. Really fast shipping to Europe (got FedEx at same price as USPS express delivery). Glad to chose Z1 ones, they look really nice. Tomorrow will be installed, so will see if is necessary to unmout strut bar.

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-->2005-6 Nissan Micra 1,3i CVT 72PS Red MY 98 -->2006-8 Nissan Almera 1,5i N16 96PS Red -->2007-8 Skoda Fabia Combi 1,2HTP 3 cylinder 60PS Green -->2008-11 AUDI TT 2,0TFSI FWD S-tronic 200PS Red MY06 -->2011 Nissan 370Z manual White Pearl

moto_italia

Probably not totally necessary, but made it much easier.
Z1 Silicone Post-MAF Intake Hoses Installed

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Kevin