alexdou111

k went to porsche today and logged with piwis lambda ahead of cat looks fine at full load and top rpm around 0.79 and when you go off the gas it always goes around 1.0 so basically this looks ok what the porsche technician spottet though was the values AFTER cat he said those were moving quite a lot - and they should be rather constant values based on that the porsche technician said he would check the kats possibly they may be stuck. I emailed TPC: so what is the course of action now mike? should I take them out and empty them for a test? would this interfere with the ECU programming? or should I get other possibly sport cats? if so which ones would you give an ok for? please advise - thank you ------- so lets see...

Here is lambda1 logged appears not too lean - but I will have someone with experience give me a feedback and I will re-confirm those values with the porsche tester tomorrow here is another concern are those 6MT vs 6MT? or PDK vs PDK? at least same type vs same type? because in all reality my car would NEVER EVER beat a GTS modded 987 here is a fact - my 100-200 km/h time is a flat 11sec sometimes a tiny bit lower - and my car is a PDK! to compare - a friend in germany has a gen1 car with a 911 3.6 engine conversion that delivers at 355 crank hp he is driving an 11.7 (2 shifts 2-3 and 3-4) so again people - i do NOT intend to bash TPC or anything but I want people to know the TRUTH about the REALITY of the mod they intend to do - and we, the customers, the people, should put our results together to create a reliable feedback on what those cars and mods really deliver :thanks: for sharing your durametric and/or 100-200 runs with another I would also ask TPC - since troubleshooting over the net is difficult, why would you not try to create data that is of helo, as a benchmark why would TPC not have duramteric logs only b1 actual and nominal lambda before cats and rpm only b2 actual and nominal lambda before cats and rpm only fuel delivery relevant values and rpm only mass air flow, load and rpm see what i mean - it would take them a 3 hour of work to create those logs and then if a customer has a problem - tell him to compare his log runs with theirs - right now anything i sent them if looked at, at all - would never get a straight answer or solution - that if you got mike on the phone - it a little like Never Get A Straight Answer and I thought Nasa was hiding the exisitence of aliens from us ;) anyhow I hope we as users - can help each other with creating logs and benchmark data - or if all may have the same "problem" as I am facing one thing is a fact THIS: is NOT my car's reality, and I checked and replaced so many things and I do NOT have any fault codes either thanks everyone lamba 1 new.zip

I have a 987.2 Boxster S with the 3.4 DFI engine an dits modded by TPC racing's low pressure turbo kit. it runs fine and i can actually compete with R8's (the V8's of course only) I have this problem though that the durametric logs show a much too lean value I just logged lambda today and its freaking me out honestly. I just emailed TPC: hi mike, when I went to my garage i did that throttle body thing and brought it to 14V - all good now - something that still gives me headache - even that the car runs better now - it is still incredibly lean! what do your DFI boxster or cayman S cars with the low pressure turbo kit have in actual lambda value before cats? mine is regularly above 1,0 - at times even up to 3,03! check attached durametric log column F and G are lambda actual values running too lean can easily bring your engine to blow - you know that more than i do please have a look and let me know your feedback thanks alex ----------------- so the car is running better than before now - but its still incredibly lean. can anybody else on this forum, like the recent cayman R build duramtric log his lambda values - if all DFI cars are driving these I foresee a dark future for our engine - a very recent dark one indeed ----------------- tpc's (mike's) response: your using durametric you have no idea what those values are its unreliable ----- thanks - but how does this help exactly? so I replied: so what should i do then to get peace of mind on this too lean angst that i have? who can log or better what system can log real a head cat values for me correctly? ...so lets see the guys on the german tuning forum they drive driving porsche factory turbos modded up to 600-1000 hp are telling me do NOT drive the car with this kind of lamda values ----- I have attached two durametric logs - I have to admit the support from tpc is at times very difficult so you got to figure things out on your own i am afraid. What do you guys say about the durametric's values reliability? I understand all around the world it used even for ECU mappings - so that would be strange if its values were not usable - would it not? thanks for constructive participation dura logs.zip