Ok. I know it sounds stupid--but is it possible to have a turbo chatter sound? Kinda sounds like a squirrel is getting chewed up in a blender. I have an open air intake and a forge diverter valve with the yellow spring and 1 shim in it. It only happens about every few hours and its usually just once.
Oh. And....I have the most annoying ticking sound coming from the left passenger roof area. It just started today. I have no idea what it could be
Yeah thats exactly it. The engine is at operating temp and its just when Im cruising through town so Im not even in the yellow part yet. When I first heard it, I thought it was part of the song on the radio, but when I turned the radio down and actually listened for it, I could hear it pretty well
The spring in your bypass valve is either too heavy, stuck or jammed, or just all together faulty. Lower the spring rate.. or replace it all together.. Compressor surge is BADDD... although it sounds cool... like death lol
Ehh thats not something I wanted to hear. I just bought the Diverter Valve back in September too What are the spring rates for the diverter valve for an Aero? I thought the Aero was supposed to have a Yellow one because it can run up to 20 psi and the spring is rated for 22 psi. Should I just take away the shim and keep the spring or switch the spring altogether?
Mines running a yellow in stock orientation (the green would work when it's facing the stock direction also.. but I went with yellow) If you reverse the bypass you NEED to run at least the yellow. I dont have the shim in mine, just the spring.. and I have no problems
Hmm. We'll I know theres people who put it in backwards (Head/Vacuum line facing left) but I have no need for that. You know how cold it's been the last week considering you live in Mass. Maybe the metal is just sticking together? Idk. But with 330 hp from an ECU upgrade I dont want to kill the car by putting another spring in. :roll:
Yeah. I have the stock turbo but I have a SQR custom tuned Stage 3 ECU with 465cc injectors, intercooler, 3" JT turbo back exhaust, and a high flow fuel pump. I know its probably terrible to run the stock turbo, so I've been looking at a TD04 for the spring. I just had the DI replaced last week and a new race-cat.
What just donned on me was that I didn't do any adaptation runs after the DI and cat were installed. It might be why it's been acting strange.
Check your vacuum lines. Mine made the same sound when a little nipple snapped off the intake manifold. But if you are still boosting then I don't think this would be the case.
*Facepalm* I'm running a stock turbo...with all the crap that I've said before. I mentioned the other turbo because that can legit hold up to 350 hp. The one I have (stock) b!$ches and moans when I romp on it because of it's small size. I did an adaptation run last night (after putting in the new DI and race-cat) and now it works fine...for now. I checked all my lines and fixed one of them. The diverter valve line to the firewall was dryrotted from about 3 inches from the valve to about 5.6 inches from the firewall. I had this issue way back when I installed the diverter valve and the P1110 code came up. But now that I have the stage 3 in it--it's obviously different.
With the cold weather I've had in Massachusetts (Saab Love can agree with me) I think it's the diverter valve just being a pain and not working properly. I think a new one is in order soon. One thing at a time.
And btw...I ordered the TDO4HL19T (as before mentioned) like 10 minutes ago. It wasn't cheap but hopefully it'll make a difference.
TheRonis9-5;1904759. I checked all my lines and fixed one of them. The diverter valve line to the firewall was dryrotted from about 3 inches from the valve to about 5.6 inches from the firewall. I.[/QUOTE said:
That little vacuum tube was the most likely culprit. It always gives that turbo chatter sound if it is deteriorated. Basically your dump valve can't operate properly.
Suggest you change all your vacuum pipes, as if one is shot, the rest could be too.
Glad you've bought your new turbo, that 15t No.5 will be blown to hyperspace on that ECU tune!
I ran a TD-04HL 18t for many years without any piston issues........is the 19t that much of a beast then?
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