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Christov

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  1. Howdy, Lately I've been getting into data logging and live monitoring of various things, using an OBDLink MX and CarScanner or DashCommand. One thing I've noticed is that my short term fuel trims are coming up very high (ahead of boost) under WOT, up to around +20%. I understand what fuel trims are and their purpose, haven't checked my long term fuel trims but will do so tomorrow. Is this normal for a tuned car? I can see it making sense that it's pumping in fuel ahead of the air it's about to take in. Any thoughts?
  2. That’s a very sensible idea, thank you! Do you think it would be possible to check if it’s running lean based on the OBD2 reader for oxygen sensors on each bank? My tuner is a long way away from me so I’m trying to avoid having to go there.
  3. Howdy, I'm looking to change my exhaust, currently my car is tuned to 380rwkw. Current exhaust system is - factory dump pipe, venom high flow cat and cat pipe. Factory catback with middle muffler removed. I am only looking at changing my exhaust from the cat back, to either a venom cat back or something similar. Question is, will I need a re-tune? I've heard mixed reports.
  4. So can anyone actually answer the question. With my boost coming on earlier, am I going to require a re-tune?
  5. Correct, 3.46 with the ZF was horrible to drive.
  6. Thanks. I'm having the axel ratio changed in some dealership level tool.
  7. Howdy, After some general advice. 2014 FG Mk2 XR6 Turbo, Auto. My car was last tuned with 3.46 diff gears (stupid idea to change the diff ratio I know). On Monday 23rd July I'm having a new diff put in with factory 2.73 ratio. Question - will I need to get my car re-tuned? From a time saving perspective I'm hoping not, but boost will come on way lower in the rev range than with the 3.46 gears. I estimate in Gears 1, 2 and 3 probably over 1000rpm earlier. Any thoughts would be much appreciated.
  8. Stock cat will start to restrict between anywhere from 270rwkw onward (as it did on my car). If you upgrade the turbo and high flow it, you should upgrade your exhaust at the same time. You don't have to do the dump pipe, the factory one can and has held it's own around 400rwkw with a high flow cat and cat pipe - as well as an upgraded cat back exhaust. It's horses for courses really. Car's on the same dyno, same day with exactly the same mods have made 25rwkw more than mine did.
  9. Auto my friend. Car is in VIC I was thinking of replacing the dump pipe, so I contacted Venom and they said I don't need to with the cat and cat pipe I already have - apparently it's good to over 400rwkw.
  10. Howdy, Thought I'd start a little guessing game, as I'm having some work done in the last week of April. My car is a 2014 FG 2 XR6 T with 106K's and the following mods: - Plazmaman Turbo side intake - Plazmaman intercooler piping - Autotechnique intercooler (460x430x55) aka the eBay special - Venom high flow cat and cat pipe - Middle muffler delete - F6 injectors - Tuned to 16psi Now, the work I am having done is as follows: - Turbo rebuild with genuine Garrett GTX3582r supercore, wastegate flapper mod (I think 36mm?), 11psi turbosmart wastegate actuator - 1000cc injectors, twin in take fuel pumps (e85 compatible) - 3.46 diff gears (big step up from 2.73 factory ratio - on a daily hwy driver) - New trans cooling system - re-tuned, obviously So..... I don't plan on running e85 yet, so will be tuned on pump 98. What do you think it's going to produce? I reckon it'll reach 380rwkw on 98 - however I also think that will heat soak the cooler and it would be safer around 350rwkw. I also reckon correctly driven and 'tyred' it will pass the 1/4 mile in 11.3 seconds. Closest guess wins a slab of VB (yep, I'll actually arrange a click and collect at your local Dan Murphys!)
  11. Well I seem to be unable to get ANY live readings. Very annoying.
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