i bought from nagoya,
paid for the car then got told had to wait 3 days for compliance plate to arrive, then got told after 3 days that it had a idle problem and they sent it to autosport engineering at Kirrawee.
was told they would have it no longer than a week, so 9 weeks later i received the car by road transport to my door, still had a idle problem and a miss on cyl one.
so i rang Nagoya and asked what the go was and the said that autosport couldn't fix it and for me to find somewhere up here in bris to fix it and send them the bill.
called up autosport and asked what they had done,
the replaced afm's, coils, igniter, ecu, had the head off got it checked ( replaced valve stems & seals ect) replaced timing belt, all inlet & exhaust gaskets, had injectors cleaned ect & still couldn't find the problem
anyway i thought id attempt to find the problem myself, did compression test and it was perfect at 170psi across all cylinders, pressure tested all the inlet, that was all ok.checked plugs and found 2 broken plugs so changed them and still didn't sort it, pulled the plennum off because autosport didn't do up the nuts on the injector section of the inlet. when i got the plennum off i found one of the throttle butterflies was bent which was allowing air into cyl one & causing the idle problem
replaced all the throttles put it all back together and both the idle problem & the miss were gone.
sent Nagoya a bill of $1200 which they paid, apart from all that the car is exactly what i wanted, in good condition & hasn't caused anymore dramas.
communication was poor, they wouldn't return calls. they do keep their word. they paid for everything they said they would including qld rego, rwc, Hire car & repair bill.
The lengthy delay was due to mechanics that seem to just guess and not actually know what they are doing.
Just my 2 cents worth