Another free breathing R8

[donk vxr]

Finally got around to fitting the otrcai, throttle response is great.........cold air helps.
I kept the maf, sorry Rich!..................Now just the short shifter.

[J. J.]

That looks a proper OTRACI! Where did you get it from (and perhaps more importantly, do they do one for the Monaro)?

[donk vxr]

This is where I got it from, not to expensive, just shipping and customs, need i say more............

[e-mail]

[MyM8V8]

Great mod' Chris, shame we could not have got a before and after power difference?. Don't forget not to overoil the filter. If you do, it can get thorugh to the maf and ............

Edited by MyM8V8 on Sunday 11th January 16:59

[donk vxr]

MyM8V8 said:

Great mod' Chris, shame we could not have got a before and after power difference?. Don't forget not to overoil the filter. If you do, it can get thorugh to the maf and ............

Edited by MyM8V8 on Sunday 11th January 16:59

Well I had the other cai at SRR last year, I doubt I will have time to do anything else before this years event and at least the fan will be in front of the filter this time...................we will see if there is any difference.

[ringram]

Nice job.

Im still running the stock one at present, went back to stock for the new setup.
Now mafless again, but still running same intake for now.

By way of interest on a 102kpa day I was at 95kpa under WOT, therefore the stock induction system is ste. Though maybe not as bad with the stock engine.

7kpa is a direct loss of around 6% power. Plus the stock intake on the motorway is 10*C hotter than Ambient, whereas the otrcai is only 6* hotter. (ie) 40% better.

Blah blah, otrcai's are good. You have the honor of being member number 2 to have one. Those ones do look stock in appearance.

[stigmundfreud]

maf is the way to go for the better resolution at +4k rpm

sorry rich!

[Magic919]

J. J. said:

That looks a proper OTRCAI! Where did you get it from (and perhaps more importantly, do they do one for the Monaro)?

Their site still says they are coming... I've been watching it for a while.

[donk vxr]

Engine temp gets no where near where it used to, cold air I suppose. Is this detrimental to anything, not to worried about mpg, just thought it might overfuel???......................

[racebreed1]

i need one of these for my RO VXR cant find one even with your clues?

[ringram]

donk vxr said:

Engine temp gets no where near where it used to, cold air I suppose. Is this detrimental to anything, not to worried about mpg, just thought it might overfuel???......................

Not when the tune is right. Engine temp shouldnt be affected much if at all.

I think your throttle response will be due to the close proximity of the maf over the original location. Airflow changes are measured immediately rather than a little later on. Thats my guess anyway.

[ringram]

stigmundfreud said:

maf is the way to go for the better resolution at +4k rpm

sorry rich!

Why are you talking rot!?

The MAF has much less airflow resolution than SD, what it does have admittedly is that ability to compensate more "easily" for air temp/density as it measures it directly. SD can still do that, but requires the tuner to know what they are doing and adjust the charge blending filter as its a calculated value.

(ie) If you are lazy use the maf, if you want max power and response go mafless. SD is linear, while MAF is not linear therefore at low and high rpm it loses resolution. In addition in the mid 400g/sec airflow range it simply runs out. All you high HP SC blokes are simply fueling based on RPM at that point, airflow becomes largely irrelevant to your fueling calculations. Yes it works, but its not ideal by any means.

[stigmundfreud]

rich I didnt expect you to believe what I was saying

[ringram]

I didnt, but took it as an offer to put the boot into the MAF again