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Wobba
24-08-2008, 09:32
My old valver used to pop and bang loads with a decat and Magnex exhaust.

The same setup, minus PiperX cone filter, rarely pops.

Now, my theory is that I don't drive the Williams like the valver as to get the most out of the valver you had to rev it hard and thus there was more gas/potential vacuum in the exhaust than the Williams, which I don't need to thrash as much.

Now, the Willy has popped VERY loud only once, in Cornwall as I drove hard down a valley hill (the bang echoed round the valley, it was awesome hehe), but that was under hard acceleration.

Anyone else have any opinions?

Evogone
24-08-2008, 10:11
My cup racer wily willy engine doesnt pop at all. Very disapointing..... :cry:

Paul16v
24-08-2008, 10:34
ive noticed same mate, the 1,8's pop a hell of a lot more than the 2litre. Must be something to do with the 1,8's chucking more fuel in the exhaust on the overun.

Wobba
24-08-2008, 10:40
ive noticed same mate, the 1,8's pop a hell of a lot more than the 2litre. Must be something to do with the 1,8's chucking more fuel in the exhaust on the overun.

Ahh, glad it's not just me to notice! Thought I had done something wrong when fitting it hehe.

J o n
24-08-2008, 12:40
I think it depends on the exhaust system on the Williams, as every Williams I know of that ran a powerflow system from top gear motorsport got pops bangs and flames on overrun. Mine did it with the cat on too, even managed a flame with 2 live's cat on it when I borrowed it for the MOT lol.

Other option for certain flamage is a stand alone... 1*2's dont pop or bang much at all on stock ECU's, you can however 'mess' with the aftermarket ones lol

http://www.youtube.com/watch?v=y3bWt6WO454

http://www.youtube.com/watch?v=_EroSGpaMuE&feature=related

Lunner
24-08-2008, 14:52
Mine never did till i wrapped the manifold and downpipe now it flames on the motorway

Mr.AdamB
24-08-2008, 15:28
mine pops and bangs quite a bit wen i tap the throttle on the over run :twisted: smoked a bit wen i do that tho!!

FATBOY
24-08-2008, 15:51
the DEVIL flames all the time :twisted: :D

Daz.
24-08-2008, 20:02
my old powerflow popped like a good un - standard exhaust doesn't even fart under its breath :lol:

Paul16v
25-08-2008, 12:37
mine pops and bangs but nowhere near as much as when it was a valver, that would do it without trying lol

Wobba
25-08-2008, 16:27
mine pops and bangs but nowhere near as much as when it was a valver, that would do it without trying lol

Same here.

Since curing the knocking and sorting the water pump and cooling, and engine mount, it has been popping a bit more on overrun.

Paul16v
25-08-2008, 23:38
defo somethin to do with the map on the standard ecus.

williams must be a lot leaner maybe.

may old hybrid was the same.

G33R7
26-08-2008, 08:27
my williams with gunner chip and decat pops like hell.

McPikie
26-08-2008, 08:31
Anyone got a decent hi-res pic of a valver/willy popping a flame out?

G33R7
26-08-2008, 09:48
send me a hdtv camcorder and i will make you some.

Wobba
26-08-2008, 14:53
my williams with gunner chip and decat pops like hell.

Gunnerchip eh? Hmm....and heatwrapping manifold and downpipe you say? Hmmm.....

*heads off to order all the above*

G33R7
26-08-2008, 15:38
no standard manifold. K-tec silenced decat, raggazon straigt throuth center pipe and raggazon exhaust.

FlamingMonkey
26-08-2008, 16:31
Mine pops and bangs somewhat, infact I struggle not to :D

number1
26-08-2008, 22:47
my hybrids gunnerchipped, pops n bangs like a good un! decat n mongoose ftw!

Dave

wazza16v
26-08-2008, 23:09
Mine pops and bangs like a gooden. thats with a magnex exhaust, k-tec silanced decat, big valve head/polished and ported head, kent cams with standard airox with itg filter.

Wobba
26-08-2008, 23:56
I have just ordered some thermal insulation exhaust wrap, gunnerchip and Ph1 ECU board for it as well. Already got the decat and Magnex.

Gonna get Summeh, Leighanne and Matt (and even Justin if he has his car done soon!) to see if I can spit flames out my arse whilst following me, when it's all fitted.

Will update here with our findings!

LEIGH-ANNE
30-08-2008, 14:34
fallen out with adam then.........? :shock:

white16valver
02-09-2008, 20:54
Mine's magnex catback and I get pops on gearchanges and a burble on the overrun! :D

tbh I think the cat's fooked as it stinks of petrol on idle LoL