Silvia Club of NSW

Due to the increase in volume of the pipe work and core it will be marginally slower to reach peak boost, but this is offset somewhat by the improved power due to cooler intake charge at the same boost.

But as your turbo is making a max of 15psi with no pressure going to the actuator (which effectively means you have a hefty restriction infront of the turbo) the response may improve dramatically by opening up the pipe work. It's all theory at this stage however.

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meh

I've never noticed a loss of response when going to a larger intercooler / piping.
I think the results will be all positive on that upgrade.

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The Engine Whisperer - fixer of things

I noticed a marginal increase in mine when i changed from stock as the piping length on rb's has to increase by such a big amount. I also maintained close to stock pipe sizing.

It didn't particularly bother me though as the other benefits outweighed the fraction of a second increase in throttle response and boost threshold.

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meh

yeah I get the feeling that the length makes more of a difference than the volume when it comes to response - and on the S cars a front mount setup doesn't increase the length much.

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The Engine Whisperer - fixer of things

Should actually be shorter if I can get that direct setup going that I was looking at.

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I didn’t break it, I just modified the operational status...
There are 10 types of people in this world, those that understand binary, and those that don't.

As I thought... with further refined tuning i.e lower AFR on boost... I have started to peak occassionally at 100% injector duty cycle so once I have the tune close, I am going to back about 2 psi out of it which will put me back into the comfort zone.

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I didn’t break it, I just modified the operational status...
There are 10 types of people in this world, those that understand binary, and those that don't.

Thought you guys who are interested in this turbo might want to have a gander at my drive to work. The interesting thing to note is when it comes on boost and how fast. http://upload.silviansw.com/Boost.jpg

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I didn’t break it, I just modified the operational status...
There are 10 types of people in this world, those that understand binary, and those that don't.

can you explain it a bit

what are the x and y axies besides the obvious rpm

Is that throttle position across the horizontal axis?

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Sorry guys I have been looking at this program for a while now and I just take it for granted...

Obviously RPM going down.
From left to right is vaccuum to boost
The top section is desired AFR for any given RPM / MAP point.
The boxes on the main map indicate the current injector time in ms for that X,Y coordinate.
Lengend at the top to tell me how close to perfect it is.

The thing I find really interesting is that it makes boost at idle speeds it spools so quickly. (taking off makes those readings)

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I didn’t break it, I just modified the operational status...
There are 10 types of people in this world, those that understand binary, and those that don't.

ah, now i understand, just out of interest, im figuring you are using this program to tune the engine, how do you set/tune the ignition timing correctly or have you used a dyno for that??

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You assume correctly.... The Haltech can generate data logs, I record MAP, RPM, Inj and AFR. I use the data from the .csv file and run it through this program I wrote. I am not conviced that the data in the log file is 100% correct because I get some severe variance in the same X,Y coridinate.

What I suspect is happening is that the data from a different X,Y is being recoded against the wrong spot. Hence the next phase of the project is to get the data directly from the ECU and calculate in batches.

The ignition map I got from Adam at JEM and I modified ever so slightly.
I was thinking one day I would like to try automate it as well but that is a long way off.

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I didn’t break it, I just modified the operational status...
There are 10 types of people in this world, those that understand binary, and those that don't.

ok quick update this turbo is on my car now, its running stock boost since it hasnt got a computer yet. It is laggier than a stock t25 but when comes on it comes harder.

I should have a computer, cams and injectors done in the same hit in 2 weeks so ill post up a dyno sheet from when it gets tuned.

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i like rice ...... with a side dish of noodles!

stock boost without a turbo is awesome

installation wise it was not too bad:
- fitted to the manifold perfectly
- fitted to the dump pipe perfectly
- you will need braided oil lines
- it fitted up to the water line
- air intake on the turbo had to be cut, rotated and welded
- you will need the right bend for the intercooler hosing

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i like rice ...... with a side dish of noodles!