Mazda Rotary Club

General => General Technical => Topic started by: DRFTR on August 17, 2007, 11:06:15 AM

Title: FD3s: Second Turbo kicking in very late
Post by: DRFTR on August 17, 2007, 11:06:15 AM
Hi

got a big problem on my FD3s:

the second Turbo is coming very late,
it varies from 4500 to 7500rpm.

only know it\'s not the ECU,
i tried both the original and the apexi power FC

hope anyone can help me

greetings Michael
Title: FD3s: Second Turbo kicking in very late
Post by: Grizzly on August 17, 2007, 11:25:27 AM
I would suggest looking at the Charge control valve/Piping for it, i know some one that had a similar problem. Its also quite easy to test, Let the car idle for a few minutes then knock it off, if you now pull the vac pipe off the Valve there should still be a vacuum if its good.

If that doesn\'t help read the link below.
http://www.autosportracetech.com/RX-7/TurboTroubleshooting.htm
Title: FD3s: Second Turbo kicking in very late
Post by: Ricco_04 on August 17, 2007, 11:55:01 AM
I had similar problem on mine.  Turned out that when Mazda put the crate engine in they crossed 2 vac hoses around (like what Grizzly says)  My boost would come in at around 6krpm! :eek