I have an 01 lude with a JRSC and some other bolt ons...My tuner is telling me I am running lean and that I need to upgrade my fuel system...We dyno'd the ride at around 210 and I was dissapointed. It showed I was making a constant 5 psi which I thought was strange because I thought it was a constant 6 psi with the JRSC...He was also showing some powerloss that he just didn't have enough time to figure out where it was coming from. He thought it might be a vacuum leak somewhere. Anyways, I was looking into this Synapse Engineering FPR. Does anyone have any comments on this product vs. lets say the AEM FPR? I plan on upgrading the fuel rails, fuel filter and injectors while the blower is off. It didn't say on the site I don't think but will it fit any fuel rail?
A fuel rail will not do you any good. You should have replaced your fuel filter with another OEM unit during the install. You can't use larger injectors on the setup, you would need to ditch the entire management that comes with the kit and get programmable engine management. An FPR will do you no good, you are already running fuel pressures over 100 psi during full boost. 210 whp is not unheard of with the kit. I would expect 5 psi of boost above 5k rpm, but if you are seeing that below 5k rpm then your belts may be slipping.
I know I did this ass backwards but I didn't think I would want anything more than just the blower at the time. Here is what I am shooting for...Stand alone EMU, larger injectors, Adjustable FPR, new FF and a 9lb pulley...Why wouldn't a fuel rail do me any good? I plan on doing all the upgrades at the same time when the blower is off?
I know I did this ass backwards but I didn't think I would want anything more than just the blower at the time. Here is what I am shooting for...Stand alone EMU, larger injectors, Adjustable FPR, new FF and a 9lb pulley...Why wouldn't a fuel rail do me any good? I plan on doing all the upgrades at the same time when the blower is off?
The stock fuel rail flows more than you will ever need, there is NO need to upgrade it. You would not need an adjustable FPR with larger injectors and programmable management, it would be a waste of money. If you get a new fuel filter, just get an OEM unit from Honda. Keep in mind, the blower has to come off to get to the filter.
No, you are supplying more fuel with larger injectors, there's no need to run anything other than stock fuel pressure. I would also highly recommend reinstalling your stock fuel pump.
What system are you referring to by 'piggyback'? E-manage?
Yeah e-manage...but what I really want is Hondata...why should I reinstall the OEM fuel pump whats wrong with the JR FP? So if I go with larger injectors and a stand alone I should be fine...here is what I have done so far...AEM CAI, Kamakaze Header, AEM Pullies, Greddy Evo II, JRSC w/o vtec controller, nology wires...what should I be checking if I am running lean
Yeah e-manage...but what I really want is Hondata...why should I reinstall the OEM fuel pump whats wrong with the JR FP? So if I go with larger injectors and a stand alone I should be fine...here is what I have done so far...AEM CAI, Kamakaze Header, AEM Pullies, Greddy Evo II, JRSC w/o vtec controller, nology wires...what should I be checking if I am running lean
You have an automatic or manual tranny? That will decide if you can run a standalone.
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Yeah e-manage...but what I really want is Hondata...why should I reinstall the OEM fuel pump whats wrong with the JR FP? So if I go with larger injectors and a stand alone I should be fine...here is what I have done so far...AEM CAI, Kamakaze Header, AEM Pullies, Greddy Evo II, JRSC w/o vtec controller, nology wires...what should I be checking if I am running lean
Well, with your current hardware, you should be trying to provide more fuel fuel pressure by adjusting the JR supplied mechanical FMU. If raising the fuel pressure isn't improving the a/f, then the JR management isn't going to work for you. You should be tuning for 11.5:1, but as high as 12.5:1 should be ok if you back off the ignition timing enough.
What does your tuner mean by 'too lean'? What a/f numbers were you seeing? Do you have any dyno and a/f graphs you can post up?
Well, your tuner is right, that's dangerously lean. Ideally you want 11.5:1, and if that's not achievable, no leaner than 12.5:1. Did he try increasing your fuel pressure by adjusting the JR FMU?
I would recommend not boosting on it until you get this resolved. Plenty of motors have been blown up running this kit and this lean.
Well, your tuner is right, that's dangerously lean. Ideally you want 11.5:1, and if that's not achievable, no leaner than 12.5:1. Did he try increasing your fuel pressure by adjusting the JR FMU?
I would recommend not boosting on it until you get this resolved. Plenty of motors have been blown up running this kit and this lean.
He tried adjusting it but couldn't get it to where he wanted it. Hold told me to buy an adustable fpr, hence the post Synapse Engineering...
If adjusting the FMU supplied by JR did not improve your a/f, another adjustable unit is not going to help. You need larger injectors and programmable management.
Thats what I thought but I can't afford those right now...is there something with the JR FMU that is different than lets say the AEM FPR or the Synapse FPR? Is not not as adjustable or something?
Do you have a fuel pressure gauge? What you need to know is if you just ran out of adjustment on the JR FMU, or if raising the fuel pressure made no difference in your a/f after a certain point.
Do you have a fuel pressure gauge? What you need to know is if you just ran out of adjustment on the JR FMU, or if raising the fuel pressure made no difference in your a/f after a certain point.
Well, then spending money on the Synapse piece is only going to be a shot in the dark. It may not resolve your issue, and I can only imagine that it's expensive. You might want to consider first getting a fuel pressure gauge, instead. Also, just from the looks of the Synapse FMU, I wonder if it will fit between the rail and the blower parts.
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