My son has a 2000 Prelude base 5 speed with a JRSC, using JRSC emu. We want to upgrde the engine management to Hondata S300.

Will we need to replace the JRSC supplied fuel pump and fuel regulator with a stock regulator?

Are 550 cc injectors the correct sized injector? Could we run the stock injectors?

Any advantage/disadvantage between an Innovate or PLX wideband controller?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by uncledan &raquo;</TD></TR><TR><TD CLASS="quote">My son has a 2000 Prelude base 5 speed with a JRSC, using JRSC emu. We want to upgrde the engine management to Hondata S300.

Will we need to replace the JRSC supplied fuel pump and fuel regulator with a stock regulator?

Are 550 cc injectors the correct sized injector? Could we run the stock injectors?

Any advantage/disadvantage between an Innovate or PLX wideband controller?

</TD></TR></TABLE>

all of the JRSC fuel components will need to be removed. 550cc injectors are perfect size. No, you could not run the factory injectors without maxing them out. The duty cycle would likely reach 100% before you got to 5500 rpm.

The innovate and PLX widebands are both nice, however, i believe the PLX is what hondata recommends running with their systems. The innovate requires a little more intuition on finding the best engine grounds and properly wiring it. The innovate also require recalibrations every now and again which gets kind of annoying. I dont have experience with the PLX but i know the new systems look pretty solid.

http://www.innovatemotorsports.com
http://www.plxdevices.com
http://www.hondata.com

 

[QUOTE=98vtec]

all of the JRSC fuel components will need to be removed. 550cc injectors are perfect size. No, you could not run the factory injectors without maxing them out. The duty cycle would likely reach 100% before you got to 5500 rpm.

The innovate and PLX widebands are both nice, however, i believe the PLX is what hondata recommends running with their systems. The innovate requires a little more intuition on finding the best engine grounds and properly wiring it. The innovate also require recalibrations every now and again which gets kind of annoying. I dont have experience with the PLX but i know the new systems look pretty solid.


Thanks for the response.

I am trying to understand why the JRSC fuel components need to be replaced. I thought the JRSC fuel pump is a higher volume pump. The regulator I don't understand at all.

We are leaning towards the PLX because of the recalibration of the Innovate.

 

Cany anyone explain why the JRSC fuel pump and regulator have to be replaced when going with the Hondata S300?

 

i was only meaning the FMU, sorry for the confusion.

 

youll probally get more answers in the forced induction thread,or tuning...

 

The JR electronics system has limited fuel control (if any) and is designed to work with stock injectors which aren't really big enough. So to make it all work, they use a rising rate fuel pressure regulator (also called FMU) to jack the fuel pressure very high under boost to get enough gas into the engine. You don't want/need that with S300 and 550's.

I don't see why the JR fuel pump would have to go anywhere. You need a pump like that to support very high fuel pressures and high horsepower, but it shouldn't hurt anything with more proper stuff installed.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by uncledan &raquo;</TD></TR><TR><TD CLASS="quote">Cany anyone explain why the JRSC fuel pump and regulator have to be replaced when going with the Hondata S300?</TD></TR></TABLE><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by A Blue Lude &raquo;</TD></TR><TR><TD CLASS="quote">The JR electronics system has limited fuel control (if any) and is designed to work with stock injectors which aren't really big enough. So to make it all work, they use a rising rate fuel pressure regulator (also called FMU) to jack the fuel pressure very high under boost to get enough gas into the engine. You don't want/need that with S300 and 550's.

I don't see why the JR fuel pump would have to go anywhere. You need a pump like that to support very high fuel pressures and high horsepower, but it shouldn't hurt anything with more proper stuff installed.</TD></TR></TABLE>

Thanks for the responses. These are answers I can understand, and I appreciate it.