G'day fellas, iv ordered a 10psi pulley kit for my standard S/C calais & i'm interested in chipping it. iv been looking at getting an XU6 chip (about $200). will that work with the increased boost? or am i better off doing something else? Im also looking at getting a full extractor/exhaust system
There is a member on here that may be able to help you, called Dr Bob. He seems to know alot about the chips and BCMs etc. Is the Chip you are buying for a standard XU6 or a modified one out of an XU6? I think the XU6 only developed 180kw (only...) but if you put on a 10psi pulley you will get more out of the SC engine without changing the chip. From what I've read the best way to go is pulley, rockers, exhaust then cold air intakes, K&N filters etc. Exhaust mods for power apparently should start with, the part that has the cat on it going up to 2.5 and with mandrel bends. after that you can change your cat back and then extractors. As I say this is only on what I've read, alot of people will have different results, and I suppose it may vary depending on your engine and what it needs. Alot of good reading at v6supercharged.com.au
Dr Bob would know all about remapping the Memcal etc for getting the most out of your engine modifications.
As mentioned before... Getting a CAI and good exhaust will benefit the higher PSI pulley heaps!! Plus, if u get the pulley and chip now... then down the track when u get an exhaust you may need to get a retune to get the most out of that... You gonna get the engine flowing well... then tune it... If i was you, i would do something along the lines of: 1) Pulley (Already got it, NICE) 2) 1.95:1 Yella Terra roller rockers, talk to the boys at YT and they will do a mix and match ratio combo that will work on the charged engine... i think something like 1.9:1 on the intake and 1.95:1 on the exhaust... not sure, have a chat with the boys... they will hook you up. 3) Full exhaust, headers and a catback... the stock cat should still be upto the job... a 2.5 or a twin 2.25... the bigger you go, the more you loose bottom end but gain top end. If its a daily driver i would go a smaller exhaust so u got the bottom end go you will be using alot... 4) Get a decent CAI, the factory one is abit narrow.... I personnally recomment SS Inductions but they are abit more expensive compared to other kits that will deliver basically the same result... 5) I would be tempted to throw in a bigger Throttlebody, a 69mm MACE TB did wonders for the throttle response of my N/A ecotec so i guess it should do some magic on a high psi supersix! 6) NOW get the chip and tune it to make the most of all the above... 7) If you want to make this thing really angry... get a 3.73 LSD... Some people will say 3.9 but 3.73 is a happy median between a gain in up'n'go and not reving high while highway crusing... The gears will need a speedo and shiftpoint adjustment, once again Dr Bob is the man to talk to about that! Good Luck.
Yes this is a very important point, if you get it tuned. If you get a chip from a different engine that may have slightly more aggressive settings with fuel mapping or however they extract the power it won't get all of the power that your motor will put out. The xu6 are the same engine, same pulley and all that. Not sure on the exhaust though. You would definetly getting more power from having it tuned. Will cost more than $200 however. Jesterarts has got a lot of power out of his NA six and his advice on getting it to breath is through spending a lot of money and from experience, so he does offer very good advice. ?Not sure if you want to spend that much money but int he long run if you are not happy with the pulley, I would follow his steps.
Stick with the stock chip. The only thing better is a full custom dyno tune in real time. Your ECU is self learning and adjusting and is very sophisticated in this respect. To get the most out of the boost upgrade a free flowing cold air supply is essential. Re gap your stock plugs to 1mm instead of the stock1.3mm to stave off weak spark due to more pressure in the cylinder and make sure you only use 98 octane fuel all the time. A cat back exhaust would be the next step and maybe an LSD after that.
Don't waste ur dosh on a chip. There is no substitute for a dyno tune in real time .The stock ECU has a vast learning ability. It will adjust to extra boost to a certain point. 10psi/86mm pulley is well within it's range to adjust to. A free flowing cold air intake is essential now that you have upped the boost and also you will need to re gap the spark plugs smaller to 1mm (stock is 1.3mm). This is to reduce the effect of extra cylinder pressure reducing the sparks ability to bridge the gap. CAI and re gap your plugs will cost you $50-$200 depending how you go about it but a chip won't be relevant to your car.
