Preserved from CalaisTurbo. Original authors and dates are shown; archived members are not current Holdcom accounts.
Peoples, Its a VL Turbo Calais, Need to know some info about my own car!!! All i have done to it is added EMS stinger, Bosch Porsche F/Pump + Large Regulator With Surge Tank. Large Exhaust with Dump Pipe on Turbo... Dyno reads 13.5 psi.. How come its got so much boost.. (Not Complaining) It is a genuine MX7 Manual Box, According to tags.. Brock Interior (Beige), No Intercooler & No visable mod's on motor...oh and it has K&N Pod
Question.. Is this an options thing when ordered? Or is it some sort of special edition...
Could Not tell if turbo has been hi-flowed or not...
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sounds like the boost has been set at 13.5psi instead of 6-7psi. There were no special VL turbos/calais that came with extra boost.. maybe the odd engine that produced 7.5psi that was just a freak thing.. but nothing like 13 odd psi. hope that helps.
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sounds like sum1 has screwed around with ur boost prolly the previous owner
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Thanks Peoples for the info Helps a little, But How do screw around with the boost. Basically how do you adjust it
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with a boost controller or t-piece,
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but i dont have anything like that its all still standard
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Maybe the wastegate has been opened up a little more and is catching on something? not closing properly?
i dunno.. who cares, your car is faster than stock, be happy. lol.
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Quote:
Originally Posted by white_vl_bt1
Maybe the wastegate has been opened up a little more and is catching on something? not closing properly?
Would this not create an underboost situation rather than an overboost situation?
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Actually when I think about it, it sounds as though the previous owner of your VL could have possibly tampered with the wastegate spring(perhaps swapped it over for a stiffer spring) and the stiffness of this spring is not allowing the wastegate to open up when it should be, causing an overboost situation.
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29-01-04, 07:21 GMT+10#10 Cheers, Everyone for the comments, Hopefully might see most of you at the commodore cruise this sat night, Its going to be great
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04-02-04, 22:46 GMT+10#11 I hand made a full 3" exhaust for my old vlt, added a malpassie reg and cold air intake. and had the same result about 13psi but it pinged bad above 4500rpm and had to fit a cooler. I put it down to the extra flow and volisity of the exhaust gas being to great for the stock internal wastgate. No boost controller .
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