So far on my EF 6 Auto ive put crow stage II cam, XR police series computer, genie headers, 2.5" exhaust, EL plumbing, t series snorkel & cold air ram from the lower bumper etc, etc etc, goes great does 0-100 6.9 -7.0 sec.
Ide love a 5.6l TS50 but cant afford one.
Has anyone had experience in playing with the throttle body on the 6 ?. For instance, would the 65mm 5.0l V8 fit, what about the Tickford 70mm ? what about the computer side with the plug and calibration etc ?. I dont know what the diameter of the 6 cyl one is, but would a bigger throat make a difference ?.
Any answers would be appreciated - thanks - Frank.
They look fairly big? Does the tickford xr6 have any different? You can check I guess by fitting a vacuum guage in manifold behind throttle body and at full throttle there should be very little vacuum.
The trouble with real big t/bodys is that it makes it hard to drive down low.One touch of the throttle and you are well on your way,I guess thats why the new 5.6 W has a cam type system for throttle, so it opens progresivly slow at light throttle...good engineering...
Attn Black S :
The software on the police series ECU on the EF XR6 as far as I know is;
* Rev limiter increased to 5950 rpm before
fuel cut off. (Stnd is @ 5500 rpm
* Speed limiter either raised to higher speed or removed (car has sustained just over 200kph but not game to go further - just in case (that tailshaft thing))
* Aggressive change pattern with VERY POSITIVE engaging of the clutches to eliminate flare with high rpm upchange.
But seriously, the 4 litre has the famous twin scroll intake manifold, so surely a larger throttle body could only help.
Someone says the problem isn't a small throttle body, but a too small pommy MAP(Maximum Air Pressure) sensor. Anyway - please check in.
No inlet air go's through m.a.p sensor,it measures vacuum etc..
You are not confused with m.a.f[mass air] on the V8 that is between aircleaner and throttle body.They are usually smaller than t/body..
The six don't have-m
I rang Herrod Motor Sport and asked them the same question about a larger throttle body. The guy told me the throttle body was plenty adequate, he said the mods they do at Herrods produce 14 sec 1/4 mile times.
They reccomend the following -
a, Exhaust (Headers/extractors + 2.5" system)
b, Cam (eg, crow satage II)
c, Spots air cleaner (K & N etc)
d, For EF, upgrade to EL plumbing (air tubes)
e, Cold air ram into air box & XR snorkel
(you can get the Tickford for looks)
f, Dyno tune & Unichip enhancement ($1200)
They didn't reccomend head work.
I would be interested to hear from anyone thats actualy done these mods including the unichip.
I estimate flywheel power with the above done to be around 205kw to as much as 220kw
And the New AV engine sounds better, 180KW DOHC 24 valve,and a turbo option, suck eggs Holden enjoy your push rods.
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