Guest |912| Posted June 25, 2011 Report Share Posted June 25, 2011 Hi, I'm lookging for an ems solution for my JDM 1999 subaru sti type R. I would like to retain the use of knock control and have daily drivability. Also would like to get away from using the MAF. Here is the current build description: JDM 2.0 sti heads USDM 2.5 STI Block Forged internals Blouch dom 3 xtr fmic tmoc 3 port boost soleniod k&n intake kit 850 CC Injectors equal lenght headers 3 inch turbo back exhaust (no cats, no resonators) AEM a/f meter Currently my stock ecu is being used and tuned using ecutek however i'm having a hard time controlling the 850 cc injectors as i'm running too rich before it hits boost. max boost is set at 21 psi using 91 octane fuel (95 ron) Quote Link to comment Share on other sites More sharing options...
Guest |709| Posted June 25, 2011 Report Share Posted June 25, 2011 The Vipec PnP setup would be ideal ! We have several GC8's running like this, no problems. Quote Link to comment Share on other sites More sharing options...
Guest |912| Posted June 25, 2011 Report Share Posted June 25, 2011 Does the vipec pnp have knock control built in ? Quote Link to comment Share on other sites More sharing options...
rayhall Posted June 26, 2011 Report Share Posted June 26, 2011 The plugin ECU do not have internal knock amplifier. You can use an external amplifier and have knock control. Quote Link to comment Share on other sites More sharing options...
Guest |912| Posted June 26, 2011 Report Share Posted June 26, 2011 Would the V88 with internal knock control work with my application. Quote Link to comment Share on other sites More sharing options...
Guest |709| Posted June 26, 2011 Report Share Posted June 26, 2011 There are aftermarket knock control system that will work but keep in mind that knock control not always works perfectly at high rpm's. Here we do it without knock control, just a matter of having it mapped properly (using knock control) and good fuel (RON98 here). No issues at all ! Would highly recommend it ! Quote Link to comment Share on other sites More sharing options...
rayhall Posted June 26, 2011 Report Share Posted June 26, 2011 Yes tune the ignition correctly and use the same fuel all the time, and you do not need knock control. Some third world countries like the USA do not have consistent fuel.. Never understood this as in other countries the fuel it all made the same. Ray. Quote Link to comment Share on other sites More sharing options...
Guest |850| Posted June 27, 2011 Report Share Posted June 27, 2011 Not sure if it's worse or better than in the US but fuel quality in Europe can also be inconsistent to the point of provoking knock under "high" boost (I use a J&S Safeguard wired upstream). Quote Link to comment Share on other sites More sharing options...
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