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Fuel reg 

 

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 Post subject: Fuel reg
Posted: Tue Nov 07, 2006 6:17 pm 
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Hi All,
Got the cam in, now I,am after more power I will be getting the flash tune for capa when it arrives week or two??? My question is should I get a xr6 fuel regulator before the tune or after, will the car run better with just the reg? your help would be great!!

 

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Posted: Tue Nov 07, 2006 6:26 pm 
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what mods have you done to want more fuel?

unless done lots of mods, the XR6 will just make it run rich and reduce power.

definitely get all your mods done before you get it tuned

 

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Posted: Tue Nov 07, 2006 6:29 pm 
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Hey stocky would a cam ported head and extractors benifit from have a better fuel reg? soz for going off topic XG/XR6

 

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SS Inductions CAI, K&N Filters, M-spec FMC, Turbosmart BOV, 8psi capa tune, X-force cat.

Mods going on: Nizpro springs, bosch 040 pump + Walbro gss341, 600cc injectors, PWR transcooler, 20% Underdrives, 15psi Actuator, Kingspring SSL's, 15psi tune.....More coming

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Posted: Tue Nov 07, 2006 6:31 pm 
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Posted: Tue Nov 07, 2006 6:38 pm 
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Molloy wrote:
Hey stocky would a cam ported head and extractors benifit from have a better fuel reg? soz for going off topic XG/XR6


Probably yes.

It seems that the standard fuel system (standard injectors and reg) starts to struggle keeping up at 135-140rwkw. At this point a 300kpa reg will give you more fuel at WOT but also at idle and partial throttle. Without tuning the ecu results can be hit and miss. What the ecu does over time is learn that the engine tends to run rich the end result being that the ecu injects less fuel to compensate.

If you had a 300kpa reg and a custom tuned edit you could get the balance right.

 

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Posted: Tue Nov 07, 2006 6:44 pm 
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Ok makes sense, thanks mate

 

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Mods going on: Nizpro springs, bosch 040 pump + Walbro gss341, 600cc injectors, PWR transcooler, 20% Underdrives, 15psi Actuator, Kingspring SSL's, 15psi tune.....More coming

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Posted: Tue Nov 07, 2006 7:11 pm 
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Why do the xr6 have a 300kpa reg then? xr6 are not that fast!!

 

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Posted: Tue Nov 07, 2006 7:16 pm 
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XR6 dont have a 300kpa on them he was just saying if I put one in.

 

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Mods going on: Nizpro springs, bosch 040 pump + Walbro gss341, 600cc injectors, PWR transcooler, 20% Underdrives, 15psi Actuator, Kingspring SSL's, 15psi tune.....More coming

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Posted: Tue Nov 07, 2006 7:19 pm 
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xr6's do have a 300kpa reg, standard is 250-275 depending on model

 

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Posted: Tue Nov 07, 2006 7:19 pm 
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I was under the impression xr6 had a 300kpa reg

 

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Posted: Tue Nov 07, 2006 7:20 pm 
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stockstandard wrote:
xr6's do have a 300kpa reg, standard is 250-275 depending on model
geez there ya go then didnt know that :lol:

 

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Mods going on: Nizpro springs, bosch 040 pump + Walbro gss341, 600cc injectors, PWR transcooler, 20% Underdrives, 15psi Actuator, Kingspring SSL's, 15psi tune.....More coming

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Posted: Tue Nov 07, 2006 7:24 pm 
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Who knows why the xr6 got the bigger reg. The few little mods they did might have pushed the injector duty cycle above some arbitrary number ford decided was the limit so it got a bigger reg. Maybe it was just to give a little bit more of a safety margin in the sports models. Maybe it was just something else they could easily change to set the xr6's apart from the other engines.

 

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