[Boost cut after modified exhaust]

On 1/21/2022 at 2:00 PM, Duncan said:

Yep, so the stageas are particularly sensitive to extra airflow, it's not exactly a boost cut as such but the factory ECU has a very narrow band of what it expects and once you go outside that it starts running very rich and retards the timing to protect the motor from what it thinks is some sort of issue. Shame because Stageas can do with a bit of extra go.

You do have options like an HKS Fuel Cut Defender (that is where i started with mine), but realistically if you are going to modify a stagea you need to change the ECU early in the piece because it is very sensitive and you will probably go backwards from everything you listed above without one.

I'd suggest saving for a Link or Haltech before you change anything else. Even now you are probably making less power, not more, than factory.

Okay cool, Thank you for that! 
 

I’ll see if I can find a haltech ecu because I like them a little bit more  also might go with the fuel cut defencer as a temporary “fix” to my problems, most likely won’t be doing the FMIC for a while but will definitely be getting the dump pipe and boost controller. 
 

from your experience how was the fuel cut defencer? Other than getting rid of the cut was there anything else that was a notable difference? Asking because I do plan to do all my big upgrades roughly around the same time and wondering if I should suffer with the cut until then or bite the bullet, get the ecu and get it tuned a few times.

 

also rather than the HKS fuel cut defencer or an AM ecu, do you think the Apexi safc neo would be a good thing to try out? I’ve heard that it doesn’t fix the cut and I’ve heard it does sometime too.  Definitely looking at every option because as I said kinda tight on money and will have to wait to get anything somewhat expensive.

 

had a little thought too, since the cut has been happening since I did up my exhaust do you think putting on maybe one boxy kinda style mufflers would be able to help it too? 

[Boost cut after modified exhaust]

On 1/21/2022 at 11:58 AM, Duncan said:

Mentioning what car this is could help a little, and since you suspect it is boost cut an indication of what boost it is at when it starts dying would help.

Having said that, yes it is almost certainly "boost cut", particularly if it is reasonably smooth rather than a misfire which you can normally hear, and the only practical way to deal with it is an aftermarket ECU

Hey Duncan thanks for the reply! 
my car is a 2000 rs4s, sadly my wagon wasn’t optioned with the gauges so I can’t tell what the actually boost level is but planning to get a gauge in a few weeks and yes it is a smooth cut rather than a misfire, I’ll be driving with normal power then it feels like it’s been cut in half once I put my foot down, the only audible difference I can hear is the car sounds “mean” and when the cut happens all the “meaness” goes away if you know what I mean. i will do my best to get a clip of the sound while I’m doing home for work tonight.
 

Also for the aftermarket ecu would you recommend getting one now? The car is 100% stock except for my exhaust and the 5$ intake mod I’m about to do tonight, do plan on FMIC, pod filter, boost controller and turbo dump pipe once I have money but didn’t think you d have to do much with ecu till I started messing with the fuel and turbo stuff.

 

sorry for the long reply, just tryna learn as much as I can  

[Boost cut after modified exhaust]

So as it say I’ve modified my exhaust to be a complete straight pipe no mufflers or cats (it is very loud but I kinda like it that way) and every so often when I push on the gas a bit harder sometimes around 4500rpm all the power I was feeling mostly goes away. I’ll have to do some more testing to see if it does it every time but just hoping to see if anyone might know what’s causing my “boost cut” 

only mods I’ve done is my exhaust and then blocked off my bov for the nice stu stu’s

 

also planned to modify my intake slightly this weekend and hope that is doesn’t make the “cut” worse 

[Attessa bleeder valve]

I’ve looked around and found sites that show the bleeder vavle for the r32 rear and front but I cannot find it to save my life on the s2 stagea, does anyone know or have some pictures I could see to hopefully find the valve?

i found out my fluid was low so I want to add some but don’t want air in the system.

 

any advice greatly helps and thank you in advance!!

[aftermarket audio deck shut off]

To anyone who was following this, it was just a fuse and I was checking the wrong ones, for whatever reason I was checking the accessories fuses and not the audio because I thought if the ac unit and digital clocked turned off it wouldn’t be connected to the audio one but I was wrong.

 

hopefully this helps anyone else with the same problem I had

Ps. audio fuse should be the second from the bottom and the far left side!

[4WD light after driving]

On 11/10/2021 at 1:06 AM, Ben C34 said:

Your car is f**ked then. That's not normal mate.

Any suggestions for what to do with it?

[aftermarket audio deck shut off]

On 11/10/2021 at 3:04 PM, GTSBoy said:

Break out the multimeter and start trying to find where the power is and isn't.

Damn, I honestly didn’t think about that, I’ll make sure to pick one up and start looking for around for what isn’t getting power as soon as I can. Thank you!!

[aftermarket audio deck shut off]

Any suggestions for the audio deck, dash clock and like half my air con just completely cutting out?

Checked my fuses and they’re all good, also to mention I was putting my cover back in for my trunk and I have wires for a sub back there just no sub yet. Not sure if the wires back there have something to do with it but I literally had music playing one second and the next the clock and deck went black.

It’s also for an 2001 rs4s

[4WD light after driving]

mines just always on, even once it warms up. it had a moment where it would turn off but its gone back to staying on all the time.

abs light does the same too.