Jump to content
SAU Community

Recommended Posts

Hey all, start with car details 99 s2 c34, exhaust, fmic, pod, ebc, safc 2

Recently upgraded to a kando TD05H 18G turbo and when hitting around 14-15psi everything cuts out for a second and my mechanic explained it as the stock AFM getting maxed out and over loading. My question is firstly is it most likely he is right, and secondly is there any solution besides getting a z32 and a nistune, could the safc be causing it somehow?

Cheers for any input, I do plan on doing the z32 etc in the long run just wondering if there is a temporary fix

Link to comment
https://www.sau.com.au/forums/topic/400806-maxing-out-afm/
Share on other sites

is the stock boost sensor still connected to the system, its the one at the back of the engine above cylinder 6. it will cut the engine like you said at around 14psi. you will hit this boost cut well before you hit airflow cut (maxed afm) on the stock maps. how much boost were you looking to run? on a TD05 you may get away with it on a stock AFM but you will definitely need Nistune to get a bit more out of it. stock mapping only uses about 80% of the AFM's resolution.

depending on how the SAFC is currently setup it will affect the airflow cut. if your currently adding to the airflow then you will hit the cut earlier, if your taking from it then you will be delaying the airflow cut.

Link to comment
https://www.sau.com.au/forums/topic/400806-maxing-out-afm/#findComment-6367870
Share on other sites

The safc should be delaying it then as it is said to reduce fuel consumption not boost power, and I'm not trying to run massive boost I'm happy with about 13-14psi it's just like I said it can't hold that with this turbo whereas it seemed to just get there with the stocker, I don't know about the boost sensor still being in the system I will check with my mechanic

Link to comment
https://www.sau.com.au/forums/topic/400806-maxing-out-afm/#findComment-6368827
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I’m here solo don’t have any hands to help so haven’t hit it with a timing light 
    • When you crank your car, and hit it with a timing light, can you see a steady crank timing?
    • Oh, forgot to add, A few months ago I was getting mixture codes and the car was using crap loads of fuel. You could smell the unburned fuel in the exhaust, it was crazy strong. Economy was over 17.5 l/100 and usually around 19. I smoked the engine and found a leaky CCV hose which I replaced and then I replaced my two pre cat O2 sensors, I also replaced the MAF. This fixed my mixture codes and improved my exonomy but I'm still 14 - 15 l/100 when pottering about town so something is still amiss. Throttle response is much better and it has more pep but I'd like to know why it's still so thirsty (and I'm hoping that whatever it is gives me a bit more poke).    
    • Car is on factory injectors/z32 maf/ q45 throttle body/ z32 ecu with nistune 
    • Hello all, currently finishing up a rb25 swap into my s14. Having issues with starting, car has spark (confirmed by pulling a plug and watching it spark), has fuel(confirmed by checking pulse/voltage at injectors all spark plugs are soaked in fuel). Car cranks over and pops into the exhaust with a heavy fuel smell but no attempt to start or run, I have torn the timing cover off and triple confirmed timing, turned the CAS in multiple spots both directions, attempted to start with coolant temp and maf unplugged, checked my fuel lines and made sure they weren’t backwards, checked voltage at cas/injectors/coilpacks, made sure all the grounds in the harness are connected and added a few grounding straps (1 from chassis to block, 1 from chassis to head, and 1 from chassis to igniter chip) I am getting stumped here. As a last ditch effort I made a full grounding harness tonight that’s going to run from the battery and add an extra ground from the battery onto the coil pack harness/igniter chip/ intake manifold/ Wiring specialties harness ground/ and alternator. I’m hoping maybe the grounding harness will fix it here but posting here to see if anyone has any other ideas on what else I can check. My fuel pressure is unknown right gauge will be here tomorrow.  IMG_3206.mov
×
×
  • Create New...