Richard Quinn
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| posted on 20/3/09 at 09:19 AM |
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Interesting potential SVA issue..
I have a possible issue with 2 aspects of SVA and I was wondering whether anyone else had encountered anything similar...
If the noise and emissions tests are done using the Tester's tacho connected to the coil / ht lead, does this mean that the bonnet has to be off
for these tests?
The reason I ask is that my scoop / filter / airbox is integral to the bonnet so, without the bonnet induction noise will increase and emissions will
change. Has anyone else had any similar experiences or am I the only one daft enough to have my airbox like this?
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maximill666
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| posted on 20/3/09 at 09:25 AM |
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The tester just checks to see if your tacho is accuate with his, the bonnet can be put back on then & commence the noise test. Emmissions test can
be done with bonnet on or off, your choice.
Thats what happened with mine
[Edited on 20/3/09 by maximill666]
[Edited on 20/3/09 by maximill666]
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DarrenW
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| posted on 20/3/09 at 09:39 AM |
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I dont recall the tester checking my tacho accuracy (digidash). I recall he had a drive around outside to check self centering and mirror visibility.
Came back towards the test centre (not too close though), set his mic up a metre away from exhaust then told me to jump in and hold the revs (he told
me what he wanted to see). He then just picked up the mic and put it away - totally fuss free. Very sensible approach and no drama.
If bonnet needs to be on for corect operation of vehicle then id guess they will understand that and allow test to be conducted with it on. i found
them very approachable when i phoned them before the test to ask some advice if you need piece of mind.
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Paul TigerB6
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| posted on 20/3/09 at 09:39 AM |
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quote:
Originally posted by Richard Quinn
Has anyone else had any similar experiences or am I the only one daft enough to have my airbox like this?
Nah nobody else would be daft enough to design it like that. Silly idea!! 
So leaving the bonnet off with lean the mixture out slightly. I guess that gives you 2 chances of getting the lambda reading within spec before
touching the Power Commander if required.
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iiyama
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| posted on 20/3/09 at 09:58 AM |
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quote:
set his mic up a metre away from exhaust then told me to jump in and hold the revs (he told me what he wanted to see). He then just picked
up the mic and put it away - totally fuss free. Very sensible approach and no drama.
One Metre?? 1? Bloody numero uno?? They tested mine at 500mm!!!!!!!
If its broke, fix it. If it aint broke, take it apart and find out how it works!
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Richard Quinn
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| posted on 20/3/09 at 11:44 AM |
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quote:
Originally posted by Paul TigerB6
quote:
Originally posted by Richard Quinn
Has anyone else had any similar experiences or am I the only one daft enough to have my airbox like this?
Nah nobody else would be daft enough to design it like that. Silly idea!!
So leaving the bonnet off with lean the mixture out slightly. I guess that gives you 2 chances of getting the lambda reading within spec before
touching the Power Commander if required.
Aah but I'll need an engine hoist to lift the bonnet off won't I? 
It'll be a little leaner unless it starts sucking in animals and small children!
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DarrenW
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| posted on 20/3/09 at 01:16 PM |
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Must be interesting tuning your engine. Are you a gynacologist in your spare time?
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Richard Quinn
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| posted on 20/3/09 at 01:33 PM |
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Things have moved on a bit since the days of twiddling mixture screws etc. Oh, I see you've got a Pinto
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Paul TigerB6
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| posted on 20/3/09 at 01:40 PM |
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quote:
Originally posted by Richard Quinn
Things have moved on a bit since the days of twiddling mixture screws etc. Oh, I see you've got a Pinto
He's got the bike carbs though - at least he's made an effort to fit parts of a bike even if he forgot the rest of the engine!! Still
wouldnt be able to tune his car on a computer though hey!!
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