Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - strange fluttering sound at high rpm for SC

JoonPrime · 10-09-2014, 04:48 PM

Hey you guys a question for you as its got me a little worried.
-ive recently gone FI with a kraftwerks SC courtesy of the gentlemen at r/t tuning. I absolutely LOVE it and couldnt think of ever going back, in fact i wanted to get it custom tuned for 93 gas + a header if my bankroll allowed later on.

but the important matter at hand.....and the reason its got me a bit worried is that its only started happening since yesterday. when im driving a bit above the 4500-6000ish rpms, the engines starts to make this weird sound, like a tag fluttering in the window !

is this something to be worried about? i knew going FI had some..possible repercussions..but with the tune so weak i figure my car would have to last longer then just over a few hundreds of miles!
couple notes of my driving habits:
1) most of the driving was done on the highway between 2.7k-3.5k cruising.
2) the only times the car was really punished were for periods less then a minute. (redline from 1-3 and then stopped)
3) the hundreds of miles is closer to around 1200 miles.

is there something i can do to check for damage? should i be very concerned?? thanks in advance guys!

10-09-2014, 04:48 PM	#1
JoonPrime Member Join Date: Aug 2014 Drives: 2015 Limited series all white brz Location: Hockessin, DE Posts: 41 Thanks: 7 Thanked 6 Times in 5 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	strange fluttering sound at high rpm for SC Hey you guys a question for you as its got me a little worried. -ive recently gone FI with a kraftwerks SC courtesy of the gentlemen at r/t tuning. I absolutely LOVE it and couldnt think of ever going back, in fact i wanted to get it custom tuned for 93 gas + a header if my bankroll allowed later on. but the important matter at hand.....and the reason its got me a bit worried is that its only started happening since yesterday. when im driving a bit above the 4500-6000ish rpms, the engines starts to make this weird sound, like a tag fluttering in the window ! is this something to be worried about? i knew going FI had some..possible repercussions..but with the tune so weak i figure my car would have to last longer then just over a few hundreds of miles! couple notes of my driving habits: 1) most of the driving was done on the highway between 2.7k-3.5k cruising. 2) the only times the car was really punished were for periods less then a minute. (redline from 1-3 and then stopped) 3) the hundreds of miles is closer to around 1200 miles. is there something i can do to check for damage? should i be very concerned?? thanks in advance guys!