Air filters straight from turbos

[psbarham]

Tell me more and pics please

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I'll sort out some piccys tomorrow for yah. If its any use to you then i'm sure we can work something out

[Kenneth]

At a boost pressure of 14.7psi the turbos MUST be running a pressure ratio of at LEAST 2:1
At a pressure ratio of 2:1, every 1 psi of restriction (every 1 psi less than atmospheric) at the turbo compressor inlet is worth 2psi of boost on the outlet.
Dyno testing in NZ has shown that every psi of boost is worth roughly 10kW of power at the wheels

So the question that needs answering is how much pressure loss is there at the compressor inlet at various boost levels with the standard inlet system. If you can determine that, then you would have a very good indication of whether it is going to be beneficial to go down that route or not.

As for dual intakes being done already, bradc has his set up that way. He has quite a bit of other supporting modifications including back cut turbines and full standalone engine management and has been able to reach around 400hp.

[apeman69]

Cheers Ken. I'll put on my white scientist's coat and specs and go check it out
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Yup, it's a goer!

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[apeman69]

I'll sort out some piccys tomorrow for yah. If its any use to you then i'm sure we can work something out

Any news, PSB?

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[psbarham]

Any news, PSB?

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Not yet, got caught up with a silly German thing last week, and on call this weekend, should get a chance tomorrow

[Mark 4]

So the question that needs answering is how much pressure loss is there at the compressor inlet at various boost levels with the standard inlet system. If you can determine that, then you would have a very good indication of whether it is going to be beneficial to go down that route or not.

Ken, the feed to the front tub is rigid plastic. A pressure sensor could be put there and logged - or could it not ?

[apeman69]

Enough theory. I have dyno results as is. Gonna do this and get it remapped then see
Intuition tells me, when running MAP, this has got to be a way forward. I'll update in due course. Haven't got any foreign hols booked (the main drain on my finances) from sept til april next year............. but should I invest in a big fat turbo upgrade for the Skyline?
Must resist and get my daily driver more than up to scratch

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[Kenneth]

If you want to have valid results, you need to dyno the car after the mod and BEFORE tuning. Tuning by itself is worth HP and to do this in conjunction with another modification and then say the modification gained you HP will, unfortunately, just invite ridicule.

And yes, it would be easy enough to log the pressure at the front turbo pipe. If I was going to do it I would probably use the BOV port (which is currently blanked off)

[Mark 4]

My BOV port is bunged with a home made aluminium plug. I could easily drill and tap it to connect a sensor. Question is, is it worth the effort and will we learn very much ?

[apeman69]

I have results before this mod. After doing this mod it will need re-mapping and I will get an 'after' report. Contrary to beliefs I am not a numpty. Feck me, I had a professionally recorded IQ of 162 at age 21 and it's supposed to increase with age (I'm now 42). I may seem a bit socially inadequate or strange to casual aquaintances but, trust me, you will not meet a more liberal, generous, down-to-earth individual unless you are extremely lucky, or foolhardy enough to be taken in by others' bullsh!t.
As I'm sure you're aware I'm not talking about sticking a couple of air filters on a standard car and hoping for the best. My car is only short of a monster turbo upgrade: everything else is in place and I'm just looking at changing bits that, perhaps, Mitsubishi had to compromise on.

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[Mark 4]

Feck Alan, what's that all about ?

[apeman69]

Kenneth, you're talking through your @rse. Who in their right mind is going to do that when getting the most out of their car is the ultimate aim? Surely the question is, given a remappable ECU, is such a mod beneficial. This is only determinable once the ECU has been remapped after the mod. Who, in their right mind, is going to do this to a car that is not remappable?

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[Mark 4]

http://www.youtube.com/watch?v=aXqkNF8fgs8

[apeman69]

Feck Alan, what's that all about ?

Dunno Mark. I've had a few beers, prob sick of thinkin people reckon I'm an idiot (IQ of 25 or less) and a bit peeved with people stating the obvious I guess. Though, on a general forum open to the masses I shouldn't be so touchy. Thanks for the input everyone. Keep the thoughts coming irrespective of how many beers I've had. Ken, I'll apologise tomorow, when I re-read this thread in the cold light of day. Good night peeps and thanks for caring enough to give a sh!t. What a great community.

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[apeman69]

I think I've lost the plot'

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[Mark 4]

Sleep tight mate. Tomorrow is another day.

[apeman69]

http://www.youtube.com/watch?v=aXqkNF8fgs8

Why drag stevo vr4ish into this?
Bloody meerkats. Grrrrr! Cheaper insurance my @rse!

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[Mark 4]

Go to bed.

[apeman69]

I'm in bed, on the phone. Stop giving me something to reply to

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[Mark 4]

Put the phone down, shut the **** up and go to sleep.