B-Man

Steve, Hills Motorsports in Castle Hill did the Plenum - all the origianl idle contol etc is retained. Not sure what it flows, Mark from Hill worked all that out - he told me about volumetric displacement etc etc, (ent over my head a little to be honest. He reckons that the with std plenum one of the cylinders (cant; remember which) gets lower flow than than the others, but with this one, plust the added volume, all cylinders get right and equal amounts of O2. The throttle body if of a Ford ( can't remember which model) Stock TB won't fit as this one is bigger - But I spose, this could be modified as it is a semi custoem jobby - Mark has the templates for this on all sussed now - It's made out of aircraft grade aluminimum and is quite think... Standard fuel rail is retained as my injectors were hi flowed to 610cc - so all that stayed in place. Thanks for all the replys guys - looks like cams is next on the list... Megs - yep, soon as I run, I'll post the time... Cheers,

Re Throttle response - no problems there. Re Fuel Economy - has gone down, but we are working on that (approx 300kms per 50 litres) ~ 17L/100kms. I reckon it is running too rich because of axhaustr smell and black crap that spew out of exhaust when I dump it... But when on the dyno the A/F rations are perfect... I'm taking it to another dyno in 2 weeks for a compare......

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whatsisname - dude, 257 at the wheels on 13 PSI is excellent - What sort of turbo are you running. Yes, the standard ECU is controlling the VVT - I understand that if the EMS controls it tho, I'd be able to kick in the VVT at a more appropriate time, considering all the other mods. (more dyno time needed) We are looking at EMS doing this as next step. Also, do you boosted and modded guys run on the richer side of stoich, right thru the rev and load range ? (even under very small load or even idle ??) Thermo fan thing will be done ASAP - have been reading other threads about this - (gotta determine if this is a DIY thing or not...) Cam Gears - yeah, I like the look of the HKS ones - very pretty - but gotta wait for clear perspex cam cover fisrt .. j/k - I'll prob get that done at same time as cams - makes sense...... I think what I'll do is do some small, low cost stuff, like the thermo fan, and replace the crappy pod to turbo shitty plastic pipe with aluminium & sil custom jobby. Do a catch can and aluminium air box - Whilst I do some more research on cams, heads and internals....

How to get rid of high pitched alternator noice once and for all ?? (I got it down to a bearable level, but is stil there) Have tried the following : Run RCA's and Power down seperate sides of the car - Earthed the Amps as well as I can - (pretty farking good) Tuned the amp hi pass and low pass filters as best I can. Cheers,

It's all good folks - Thanks heaps for all the advice. It's always good to get the technical juices flowing in the old grey matter. I am and have been learning heaps from these types of threads and I'm sure other's are too. So keep the ideas coming in. I know there are different opinions of stuff, but I reckon the folks who know what they are on about respect all the other ideas too - As you can tell, I am still learning about all this turbo stuff, I find it fascinating. It's a pity it costs so damn much to 'play' he he. I'm not in the motor industry so independant ideas and opinions are so valuable to ppl like me and others on the forums so from all the ppl like me to you gurus - THANK YOU ! On thing I have learnt, is that it pays to do as much research as possible before comitting $$ to mods - It's hard & costly to undo a mistake. Back on topis ..... If doing cams & headwork, then wouldn't it make sense to do forgies, rings, and bottom end stregthening at the same time (if funds are available) ?? I understand that just to fit a metal or composite head gasket is like a $1500 job.... Oh and regards to VVT, I understand that EMS can hook into this (mine not currently configured tho) so then EMS can contol VVT. ( I have EMS in piggyback mode to take advantage of the idle control for air con and power steer, etc. .. yes the custom plenum has all the right controls for this too.....) Maybe this is worth investigating too.... Cheers folks,

kewl - thanks guys - I think got the answer I was looking for . Boost is not flow - Bigger turbos = more flow at less boost. Bigger turbos require more revs to get spooling to get the big flow happening. Boost is just plenum pressure measured in PSI or Bar. But wouldn't big turbo = more flow = more boost ?? OK, Here's where I am coming from: I just got a bunch of mods done. Injectors, Fuel pump, FMIC, GCG500HP Hi FLow Turbo, Front, Dump & Hi FLow Cat. Oh, and custom plenum with larger throttle body (reversed for easy FMIC install) I'm getting 235rwkw @ 18PSI boost. But I was sort of expecting 250 rwkw. DOn't get me wrong the car goes like a rocketship and the power is right accross the rev range - Turbo starts boost at 2000rpm and full boost by 3200-3500. I've been told that the turbo is good (effecient to) for 24-26PSI. Since I am getting 235rwkw , if increased boost from 18 to 22 PSI, I should be getting towards the 250rwkw level. However, as GTS-t VSPEC says, the std rings crap aout at 18 PSI. So to get my desired 275 rwkw (without doing the bottom end) , I would need to put a bigger turbo on right ?? Not increase the boost. Might be easier to just do the bottom end and then increase the boost to 26 PSI - Then I retain the investment in the 500HP turbo.

Howday Folks, I've been doing a bit of forum searching and it seems that there is concensus that standard RB25DET bottom end internals can run up to 300rwkw (if tuned and driven appropriately) Maybe 275 rwkw is a safer limit ? ...... So without doing forgies, cams, head gaskets, etc What sort of boost is required to get into the 275 rwkw domain ? Also, does boost required for more kw differ between turbo's ?? ie If you can you run a T3/4 at 20PSI to get X rwkw, can a T88 running 10PSI can get the same (X rwkw) power. If u get my drift ... I understand that by upgrading the bottom end with stonger gear (eg forgies etc) then you can run more power, more safely - By changing the head gasket to metal or composite - the lowers the compression right, so you can run more boost ? Is this right ? What boost is safe for standard internals ? Or should I be asking what power is safe for standard internals, in which case I have answered my own question. Thanks in advance.

Yeah, Nick is right - not for troubleshooting, very very minor tuning mabe..... Cheers, Nick what r u getting ?

No 4 wheel dyno sorry, only rwd or fwd. Sometimes they might tune for you - eg My 5 knob SAFC when I had it. They don't just whack it on the dyno and let her rip boris, they are pretty good and make recomendations for you.. Obvioulsy they won't let u run if you are leaning out heaps.

I'll be there. Ben - what mods have you done to get the 200rwkw ?? Nice one

W'Gong, cops everywere, defecting like no tomorrow....(Australia Day Weekend) OH, I know there's no cruze, I just meant the cruze from the Northside to the meet....

6 months and luvving it !

BIGVIS, I'm going !!! who cares how long it takes, gotta be better than W'gong - SHIT we were lucky !!! I'm taking new digicam and girly so should be a good cruze, !!! cop ya

Huh - I just walked down the road to the beach and cooled off in the magnificent ocean I have just by my doorstep. Suffer you biatches.

Oh, and I wanna see MINH and [RYAN] there too - I 'd like to meet them, plus I have a huge big 4"er that they can have their way with !!!

Ronin, yes or no ?? None of this Northside / Westside shite...come on down girlfiend !

SilviaNSW are having a Dyno day and BBQ at Unigroup Engineering on the 15th Feb. All Lines are welcome - they are a pretty good bunch of blokes. 10:30 am start. Unigroup Engineering 17a Amax Ave Girraween 2145 $40 for 3 power runs. See here for details : http://www.silviansw.com/forum/viewtopic.php?t=2377

Here I F****in am !!! I'm in - this place rocks for food - I luv it !!!! Go the sourcrout Cheers,

Cruise to W'gong about 3 months ago - with the DTM boiz, Supra boiz, etc there were a heap of cars down there.

He he - So is mine, twice on the same page up the top left hand cnr. Classic ! (although , not the focal point of attention like VISHES and BY BY)

Elections are coming up girls - vote on the ballot paper (not for Bob Carr). Minh, you should run for Premier dude - Vote 1 Minh - Skylines Australia Westside Political Party - SAUWPP I'd hit it - I mean .... vote for you !