Quickie Tune Question

[Adz2332]

Just a quick one....

I have replaced the exhaust, cat, intercooler and pods on my 33 GTR. the Power FC has recoreded some higher then normal knock readings also

Should i get a tune asap? or would it be ok to drive for awhile? As i cant get in for a bit to the tuner i want?

[Hadouken]

what do you think?

[Plattsy]

wow. great informative answer.

[Hanaldo]

I'd be surprised if those mods were causing higher knock, unless your previous tune was pretty close to the edge. But it's definitely better to be safe than sorry, if it were my car I would assume it is knocking and not drive it hard until you can get a tune. You can still drive it, just don't go loading it up everywhere.

[SiR_RB]

You would think a free'r flowing exhaust and front mount would reduce knock??

If you can't get a tune for a while drive it normally ie without thrashing it until you can get it checked

Out of curiosity what knock readings you getting now?

[Adz2332]

over 40 now.... and it does seem to spike way up for a second evey now and then.

but before it was only around 20 etc

[Hadouken]

so your boost is spiking and then it detinates

[R31Nismoid]

If you see knock increase, most people generally stop pushing the car so the knock doesn't occur.

They then go and get a retune, as changing parts usually requires this.

[Adz2332]

Yer i have been babying it ever since... but knock still happens more often then id like.

I just have no choiice as its my daily to get to work and cant get it

[R31Nismoid]

Well you didn't need to swap the parts over, it was a choice. Just like it's your choice to go and get a tune sooner rather than later.

So keep babying it and say a little prayer each night.

[Piggaz]

Pull a few degrees timing out of the entire map.

[wolverine]

40 doesn't mean it is knocking fwiw.

[Adz2332]

yer true but when i installed the stuff i wasnt expecting it to make such a big differance....

Im trying to find a loan car at the moment

[wolverine]

If you can find the cells where you are seeing 40 just pull 1-2 degrees from the cells around that level until you are ready to head to the tuners.

[Adz2332]

cheers thanks guys

[Dose Pipe Sutututu]

or just blanket some more fuel on the map, there's a chance with new pods the AFM is reading slightly different causing a lean miture, you don't have a wideband O2 by any chance?

AFMs are sensitive little shits.

[AngryRB]

Well you didn't need to swap the parts over, it was a choice. Just like it's your choice to go and get a tune sooner rather than later.

So keep babying it and say a little prayer each night.

^^^ haha..

maybe this new exhaust system doesnt flow as good as the last and its causing restriction which =knock with the same timing etc..

[Adz2332]

It better not be that reason... it's a tomei expreme ti cat back

[AngryRB]

you sure theres no restrictor inside it somewhere? is it quiet or loud? what size?

Edited September 26, 2012 by SliverS2

[Hadouken]

They are loud!