were to put AFM

josh strong · Post by **josh strong** » Wed Jan 26, 2011 4:10 pm

wen u think about it it sounds the same i guess lol because it can still only try and come out the 1 way so there for its gotta b the same thing lol ? i think this is 1 off the best car sites ever

thanks to the people who started it

cheers josh

n12sumfin · Post by **n12sumfin** » Wed Jan 26, 2011 9:19 pm

josh strong wrote:wen u think about it it sounds the same i guess lol because it can still only try and come out the 1 way so there for its gotta b the same thing lol ? i think this is 1 off the best car sites ever thanks to the people who started it

cheers josh

well the good news is you can help make this site a better place and that would be to start using a spell checker (Firefox) and writing in full words, please.

josh strong · Post by **josh strong** » Wed Jan 26, 2011 9:41 pm

sorry was out at the time so had no spell check or anything

and i cant spell for shit

so sorry

Post by **Ash** » Wed Jan 26, 2011 11:07 pm

josh strong wrote:sorry was out at the time so had no spell check or anything and i cant spell for shit so sorry

don't be sorry dude. if you aren't all that great at spelling then so what. just ignore the nasty comments and keep asking the questions you need answered. this is after all a car forum and not a spelling contest!

Kimmo · Post by **Kimmo** » Thu Jan 27, 2011 9:42 pm

But it is a pain in the arse to read poorly-written posts. And if you're asking for people's help, it's a good idea to start off by not being a pain in the arse.

Also, the voice in my head makes everyone who writes like that* sound like a retard.

A tiny bit of effort put in to use the shift key and fully type three-letter (!) words won't go astray.

*wat, u mean lik dis, kimo?

Yup.

pauly72 · Post by **pauly72** » Fri Jan 28, 2011 3:57 pm

just get yourself a microtech off ebay
no flutter, no log more power,
better looking engine bay too

paul

josh strong · Post by **josh strong** » Fri Jan 28, 2011 4:10 pm

i was thinking a nistune ?

Post by **tassuperkart** » Fri Jan 28, 2011 8:45 pm

Then all you have to do is find somebody in tassie to tune it for you....baaahahahaha best of luck!!!!!!

Damo · Post by **Damo** » Fri Jan 28, 2011 9:23 pm

josh strong wrote:i was think.
ing a nistune ?

Id do that over the microleb hands down on the previso that it is set up with the biggest vane afm it will handle!
The more time I spend looking at glen's mtech, the more I have an appreciation for a factory or top shelf ecu.

Damo

pauly72 · Post by **pauly72** » Sun Jan 30, 2011 11:16 am

Damo wrote:
Kimmo wrote:
Damo wrote:Whilst backing off, surge is not as bad as having a restrictive exhaust (back pressure at the turbine exducer).
You mean excessive backpressure (like the standard dump would cause) is harder on the bearing than off-boost compressor surge?

Compressor surge is an ugly thing; if what you say is true, I'm surprised the standard dump is so bad.
Not the shaft bearings, but definitly the thrust.

That should have read "Whilst 'Backing off surge' blah blah blah.

But yes, any backpressure is a bad thing for turbo. Exhaust pressure (post turbo) pushes the shaft onto its thrust bearing, and loads up the oil control seals with exhaust gases trying to force their way to freedom anyway they can.

Post turbo backpressure basicly reduces the efficiency of the turbine as a whole, as it needs more pressure across it to generate enough force to drive the compressor to a certain psi level. Which also introduces more twisting force on the shaft (which isn't a problem with anything but a ceramic turbine wheel realy).

Post turbo pressure also forces up back pressure in the exhaust manifold increasing pumping losses through the engine, which requires the turbo to work even harder to generate a given boost pressure.

I would go as far to say that a T2 running 20psi on a E15 with minimal total exhaust back pressure would last longer than the same T2 running 12psi on a completely stock exhausted E15 engine.

The factory don't bother about it because at stock boost levels it isn't a biggy.
Which leads to the BOV argument. IMHO, factory BOV are for NVH 95% turbo longevity 5%.

Damo

that should explain\

Post by **tassuperkart** » Sun Jan 30, 2011 7:08 pm

Damo wrote:
josh strong wrote:i was think.
ing a nistune ?
Id do that over the microleb hands down on the previso that it is set up with the biggest vane afm it will handle!
The more time I spend looking at glen's mtech, the more I have an appreciation for a factory or top shelf ecu.

Damo

You just need more training grasshopper.
Ill give Glens engine a tune when Im up there in April baaahahahahah
Even tho the basic architecture of the Microtec appears pretty lame, they can be made to perform remarkably well and easily.
L8r
E

Damo · Post by **Damo** » Sun Jan 30, 2011 10:02 pm

tassuperkart wrote:
Damo wrote:
josh strong wrote:i was think.
ing a nistune ?
Id do that over the microleb hands down on the previso that it is set up with the biggest vane afm it will handle!
The more time I spend looking at glen's mtech, the more I have an appreciation for a factory or top shelf ecu.

Damo
You just need more training grasshopper.
Ill give Glens engine a tune when Im up there in April baaahahahahah
Even tho the basic architecture of the Microtec appears pretty lame, they can be made to perform remarkably well and easily.
L8r
E

The thing WILL make bulk power old fruit, there is no doubt about it, but the resolution down low is just appalling.

(The sooner Glenn pulls the finger out and adds a 'members ride' I'll feel less like I'm pillaging 'his' story though.

)

After Chrissy, I went round and trimmed the overall mix trim to get the thing running with the bigger 13bt's. Had the wideband up the bum, and just by tweaking the trim 1% (from 48 to 49%) was enough to have the AFR jumping a full ratio. The smallest fueling step is 90micro/sec which is just too corse for a stable idle with these semi large injectors.
There are obviously a few tricks with the Microleb that I don't have a grasp on yet, but I can't see an ecconomical way around this yet.

Mind you, the way Glen drives it won't be spending too much time idling.

Damo

Post by **tassuperkart** » Mon Jan 31, 2011 6:48 pm

You just leave it to the old fella who has a good ear and a fine grasp of Microtechs young man!!!!!!!!!!
You might like to fiddle with idle TIMING!!!!!!!!!!

Us old fuckers can still show you some things!!!!!!!!!!!! Baaaahahahahahah!

L8r
E

Damo · Post by **Damo** » Mon Jan 31, 2011 8:36 pm

I can leave it to the Old fella to sweet talk it, caress it, take it to dinner and whisper sweet nothings to it, but it will still be a microleb!

Show me your wares grandpa!

Just don't fuck up the MASSIVE dyno monster I will have created by then.

Damo

Post by **tassuperkart** » Mon Jan 31, 2011 8:53 pm

OK my learned friend!
I shall divulge some secrets when the time comes!!!!!!!!!!

N12 Turbo Forums

were to put AFM

kk

afm