MaliciousMK6
Go Kart Champion
What are the trim % readings on this intake?
What are the trim % readings on this intake?
You can check trim levels via vcds, I'd be interested to know the readings, oem intake is +- 5% some aftermarket intakes are much higher and can cause cell. The tube should rest against the lip of the turbo, it ensures there's enough turbo to have the c-clamp hold.Mine are all over the place, but I'm currently working with COBB to see what it might be. LTFT at idle is around .95 but it jumps up to 1.15 while cruising. I'm not sure if it's installer error (me), bad gas, or something else yet.
Probably a dumb question, but when installing the silicone reducer elbow onto the turbo itself, how far down should I push it? I noticed some metal ridges on the side of the turbo housing (one on the passenger side facing the fender). Should I stop there and tighten the worm clamp, or jam it on as far as I can?
Never used Cobb before but if your getting a variance of 15% trim then that's very bad. I couldn't run something with greater than 8%. Unfortunately many poorly designed intakes for mk6 run this way. There are threads on it and how to check it, you can find them with a quick search.Thanks. It sounds like I might need to pull the hose up a bit and re-tighten the worm clamp. It's just frustrating because it seems pretty straightforward but I've made several attempts so I'm still wondering if it's some other issue.
Forgive my ignorance, but are the LTFT readings off of the Accessport different than what I'd see using VCDS? I thought the .95 - 1.15 correspond to 95% - 115%.
This helped me understand it more: http://www.autoserviceprofessional....-works-and-how-to-make-it-work-for-you?Page=1
Page 2 talks about measuring fuel trim with the ltft and stft numbers.
All of my data logs show a max difference of 99-105
Most are 99-102 in variance
I got a response back from COBB that suggested I may have a leak as others have previously mentioned. I'm too impatient to be scientific about these things so I reinstalled the COBB with the airflow straightener as suggested by one of the tuners here who is also testing it out. My LTFT and STFT numbers are rock solid once again (LTFT ~ 0.97-1.02). The idle is much smoother and the car pulls hard running on the Stage 1+ 93 map.
So the variables are:
- Installer error
- Some possible change in the v1.02 maps that I downloaded and the version that ships with the latest firmware update
- Installation of the honeycomb airflow straightener
I was actually making more boost on the stock airbox yesterday but my MAF readings are higher now with the COBB ~211 g/s. It's probably a combination of the crazy TX weather and not having had enough time to adapt. Either way, I'm a happy camper now. :happyanim: