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ratter

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Everything posted by ratter

  1. doesn't the dyno sheet show gains?????????
  2. a bent valve will not seat and cause major loss of compression, being down 15 psi is not normally a bent valve.
  3. http://www.fordxr6turbo.com/forum/topic/85925-under-drive-pulleys/
  4. the 20's even if the same weight as factory 18's will still slow the acceleration rate
  5. maybe post the link so others may benefit
  6. are you sure about the adjustment externally? think you will find the band adjustment is set by shims
  7. you should mention what sort of 4 speed as they 4 speed in the turbo does not have any external adjustments
  8. had a ba in the shop once that had a rail similar looking to yours, it pushed a siemens 60 lb injector out far enough to have a major fuel leak , owner was actually very lucky he did not have a fire, replaced the rail with a P/wes one and all was good
  9. if the afr's did not change with the new fuel pump then you do not need to retune. But the fuel system is not your problem. if you are really worried about the number and don't want to spend a heap of money, get a dyno run from another shop and see how it compares, some shops strap cars down way too tight which can rob power, but if they do this for the before and after you can still see the legit gains. There are tests that can be done to work out if there is an issue, but that's not normally included in the cost of tuning, talk to Gentech about whether they did any test or just tuned it and whether they are prepared to diagnose it for you. Without trying to be smart so forgive me if it comes across this way, but you did the combination, you purchased the parts, you may have to accept that there is an issue with a part you have supplied. If you purchased a package from the tuner and they guaranteed "X" amount of power with the combo and it did not make it, it would be up to them to find out why, whether an issue with a part they supplied in which case they would chase up the supplier, or whether there was a problem with the car which would fall back to you. Tyre types can affect dyno readings as can wheel size, I know for a fact that Nittos rob power and are inconsistent on the dyno, great on street, not great for tuning. I had a G6ET once that would not go over 280 rwkw even though it had a 100 cpi high flow cat, a change to a 200 cpi cat and it went 305. The small turbo will not hold high boost in the top end and choice of hardware will impact how much boost it will have, some tuners have spiked the midrange up to 18 psi plus hoping to carry a little more boost in the top end, not really ideal for a nice driving car. Gentech are good at what they do, talk to them and see if you can work out a plan of attack if you are concerned
  10. December, I will not be doing any tuning or getting involved in any problem jobs, I'll be close to having a baby in early December and sorry to say but that's going to be my priority and do not want to leave some one stranded half way through a job
  11. the fuel system is not your problem as that is easy to see on the graph, I have had owners use parts that do not work, the tuner can not do anything about it if that's how the car is presented, I will normally try to trouble shoot but am not being paid to do that, so many will just tune and leave it at that as that's what your paying for
  12. did they pick, supply and fit all the parts or did you?
  13. not all cars are equal and not all parts are either, if your parts are good, you may have actually done worse with inferior parts
  14. if fuel pressure remains as tuned for then no tuning is required, if it changes pressure the rpm range that the pressure is different requires changes to the speed density equation, some people may be lazy and just rely on the closed loop fuel operation to rectify this if it's not major, but this is not ideal and results in some of the issues we keep seeing pop up from time to time and can make future diagnosis hard
  15. changing the fuels operating pressure means for the tune to be correct the complete speed density calculation needs to be redone, a lot more tuning time required unless an owner is willing to accept a near enough is good enough situation
  16. the cars are massed produced, there can be a quite a bit of tolerance acceptance which can affect lots of areas also have to remember that not all performance parts are equal, have seen some high flow cats that do not flow very well
  17. it varies according to rpm and mct but somewhere around 9 psi
  18. yes but if tuned in closed loop should correct back to where it should be or go limp mode, no adjustment though on a stock actuator assuming the housings are in the correct position
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