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"4 star" for de-catted cars????

Old Aug 28, 2001 | 12:33 AM
  #1  
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Question

Is there any logic or argument for using the replacement for 4-star (LRP??) instead of SUL in a fully de-catted sti? If yes, anyone tried it??
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Old Aug 28, 2001 | 12:35 AM
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I wouldnt if I were you as you will screw up the sensors.
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Old Aug 28, 2001 | 01:25 PM
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on a subaru?

how about if u were using a diff ecu like a link?
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Old Aug 28, 2001 | 01:32 PM
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It'll still have a lambda probe, and that's what gets contaminated.....
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Old Aug 28, 2001 | 02:42 PM
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Is this the good old octane problem again??!!
LRP wont be good in a subaru engine, its not made for it, your timing would be out, the sensors would just get wasted all the time as its not made for that fuel type, you may as well just put diesel in it, thats meant to have a high octane rating
SUL and octane booster are THE best things for your scoob nothing else will do!!

Tony

[This message has been edited by TonyBurns (edited 28 August 2001).]
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Old Aug 28, 2001 | 03:36 PM
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Don't do it!

Even if the Scoob didn't have the lambda sensor LRP is bollox!
It has the right octane, 97 RON, but the additives aren't good for a high perfomance engine.
It can corrode engine parts if used lots.
Stick to SUL.

Mark
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Old Aug 28, 2001 | 05:59 PM
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When LRP was first introduced into Sweden in the early nineties it wrecked many turbos. This was the caused by the base additive (either Sodium or Potassium I think) in the exhaust gas stream adhering and corroding the turbo vanes. In one instance a turbo blew up after 6000 miles only. I think a differenet base additive is used in UK fuel but the government abandoned its plans to introduce a British Standard for LRP so you can't be sure what you are getting. In addition you are not supposed to mix LRP from different manufacturers in case different additives interact. One thing LRP can do is to clog up the fuel system with a white gungy paste. As said above LRP is supposed to be 97 RON which is the same as SUL which dropped to 97 from 98 earlier this year. My guess is that LRP and SUL will become rarer and rarer over the next couple of years with 95 NUL being the default fuel. DL
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Old Aug 28, 2001 | 08:35 PM
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Try filling it up is another issue. The LRP (and diesel) pump uses a larger nossle that won't fit through the restrictor hole in the neck of your filler.

Should take about an hour to fill up

David

[This message has been edited by Shark (edited 28 August 2001).]
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Old Aug 30, 2001 | 10:00 AM
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Thanks all..
(Been away so late thanking)
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Old Aug 30, 2001 | 03:10 PM
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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:<HR>Originally posted by David Lock:
<B>...either Sodium or Potassium I think) in the exhaust gas stream adhering and corroding the turbo vanes...[/quote]

It uses sulpher - gives the white/yellow gunge and also reacts with water (condensation) during combustion to give H2SO4 (sulphuric acid) which eats metal for brekkie. Not only is it not good for turbo cars, it will eventually dissolve the engine in any car. The planned BS LRP will not contain sulpher for this reason.
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