i am considering supercharging my b16 setup in my crx with the 99-00 civic si jrsc kit. this car is my daily driver and i do not plan on going above 6psi with it. with that in mind, could you please answer the following questions:

1) the 99-00 kit includes a walbro fuel pump for that car. is it compatible with my crx tank or will i need to buy one specifically for the crx?

2) will i need bigger than stock injectors for only 6psi of boost?

3) i've heard bad things about the fmu that comes with the kit. what is the best setup for reliability/daily driver and decent cost as far as fueling is concerned? keep in mind this is only for 6psi.

4) i plan on buying the jackson MAP controller and retarding my timing as jackson suggests. i will also run 93 octane gas. is this sufficient enough to rule out the possibilities of detonation?

5) what will i need for ignition? i will use colder plugs like they recommend, but is my stock coil enough for 6psi?

i've done a search on the following but couldnt find the info i wanted that was specific to my sutuation. thanks in advance for all replies. i just want to have a good plan of what i'll need before i start buying things.

thankyou!

 

1) No, it will not fit

2) You can run the stock injectors up to about 8 psi if you have a good pump and use the JR MAP controller

3) Get the JR MAP controller to eliminate tip-in detonation and lower your fuel pressures. In-car fuel pressure gauge is highly recommended. The JR FMU is notorious for being a bit flakey and a in-car fuel pressure gauge will allow you to
keep an eye on things.

4) The possibility always exists, but you should be pretty safe with that setup.

5) Stock ignition works fine.

Sonny

 

might want to upgrade your plug wires if your old ones are as nasty as mine were.

 

thanks for the responses. as far as the fuel pressure gauge is concerned, i was going to get an egt gauge. i'm told that with this i can monitor my a/f ratio. so if i can see that is there a need for the fuel pressure gauge? also i dont like what i've been hearing as far as the jr fmu's reliability. what are my other options for this? what could i replace it with?
thanks again

 

anyone else???
thanks

 

People commonly replace the JR FMU with a Cartech FMU when going to larger injectors. The JR FMU is fine with stock injectors. Just get an FP gauge so that you can keep track of what is going on. I know it's expensive, but if you are on a budget, get the short sweep version. It is way cheaper and it is FAR better than having nothing. It's also about 1/3 the cost of a new Cartech FMU.

The fuel pressure gauge is a good tuning device, but it is also a safety tool. If your FMU sticks or the hose falls off or whatever...the FP gauge will catch it immediately. You'll be blowing smoke out your exhaust before you see anything wrong on the EGT gauge.

Sonny

 

ok thanks for that info. so does that mean i have no need for the egt gauge? i was planning on getting the egt and boost gauges. would i be better off getting the FP and boost gauges? or would i need all three now? i'm tyring to keep it cost effective by not buying things i dont need.
thanks again

 

You wont need an EGT gauge. The boost, Fuel Pressure, and A/F gauges are the most important gauges you will need. You don’t need to get all three now. I wasn’t worried much about my boost I knew the boost would be pretty constant. It's up to you though if you reallly want to get that at this moment. Definitely the Fuel and Boost are the most important.

 

dont you mean the fuel and a/f ratio is most important and boost is optional? i dont know the answer but from reading the first part of your post i'm wondering if you typed the last part wrong. thanks for the info nonetheless. i've been told i wouldnt absolutely need the boost since its a sc and remains linear to rpms. is this true then?
thanks - this is good for me to sort out now rather than later!

 

You can also use the SMC and 450cc DSM injectors. It will be way cheaper than buying a Cartech and new injectors. An added advantage to using the SMC and large injectors is that you get rid of the JR IAT hack and the JR FMU. Plus you can run stock fuel pressure and a stock fuel pump, unlike the FMU which strains your stock fuel system!

 

Very true! To start out though, I would just K.I.S.S. and install the stock kit. Once the car is running, you can start to improve upon what you've got.

The boost with the JRSC is linear, but the boost gauge is handy because belt slippage (a common problem) can be easily diagnosed.

Sonny

 

ok i like the sound of the KISS method one more question though....i was going to get the JR MAP controller but it says on the site its for '94-'01 civic. if i'm running a b16a1 will it still work???
thanks

 

I have a question too...pls help

I will be running my b18c1 @ 6psi with the jrsc. I've heard that i'll be fine using the jr FMU , jr Map mod and a highflow fuel pump. My other option is to run a vafc or smc allong w/ 440 injectors and a 255 walbro. I've heard that this is better but there was that questoin about the car bogging at partial throttle. Anyone have input on this???


[Modified by B18Flip, 2:00 PM 10/22/2002]

 

ok so your using the map mod, but what year is your car? i'm just afraid that it wont work on obd0 for my b16a1 setup. does anyone know the answer to this?

 

It's an obd2 p72

 

I am very interested in this info too, esp for GSR. Any Input? I heard a good setup is the Cartech FMU, 310 cc injectors, and an AEM FPR (about ~$750). Also, is that necessary for the base 6 psi setup, or for the 8/9 psi setup? Any JRSC'd GSR guys?


[Modified by subliminizm, 9:11 PM 10/22/2002]

 

i've pretty much found through this site and carreview.com that jackson gives you everything you need for a reliable setup if you're running 6psi with exception to the map controller. its when you go above 6psi that you have to/should upgrade other things.

 

keebler65: The MAP Controller will work for your car. The install instructions will be a little different, but you should be ok. Specifically, the later cars had the MAP sensor plugged into the top of the throttle body. The older cars had the MAP sensor located on the firewall.

B18Flip: You will be fine with that setup for 6psi. For 6psi, the stock injectors, JR FMU, and a good pump (Walbro GSS-342) will be fine. If you plan on upping the boost, the SMC is a much easier and more elegant solution.

subliminizm: 310's, a Cartech, and an AEM are a waste of money IMO. If you are gonna up the boost, get an SMC and 440cc injectors. Waaay cheaper and a much better solution. I was not happy with my Cartech. It was just as incosistent as the JR FMU and with 310's and 8-10 psi, you are still putting a lot of strain on your fuel system with very little room to grow (add boost).

Sonny

 

So for stock 6psi all in need is the Walbro pump? That's it, what about the MAP mod?

And for the 8lb pulley, just run a SMC ($100) and some DSM injectors ($70). Man this all seems too simple.

 

well out of all of the reviews i've read, it seems almost everyone has detonation problems at first, then they buy the map controller and the detonation is gone for good. so i'd say its probably a good idea from the sound of things.

thanks for confirming that sonny. good to know!

 

Ok, so for a bullet proof stock JRSC system, here's what you need in addition to the kit:

High flow fuel pump (Walbro)
JR MAP Controller
JR BTC
Gauges: A/f gauge, FPR gauge, boost gauge (optional)

Anything else? Any substitutions?


[Modified by subliminizm, 10:46 PM 10/22/2002]

 

that looks good...but whats a JR BTC???
thanks
oh yeah and dont forget colder plugs...but those might come with the kit

 

Its JR's Boost Timing controller. I 've heard that this is another rather big issue with the JRSC. Timing gets all screwy. I believe you could get the same effect from the MSD BTM or the J&S UltraSafeguard, I think. Anyone want to expound on that?

What are some good plugs?

 

so simply turning your dizzy to retard the timing 8-10deg as jackson suggests simple isnt enough for 6psi??

 

I am not sure. I just heard a lot of people talking about it. that's why I put it up there for someone to confirm? And what do you mean my dizzy?