Ok, so I don't own a CL-S, but, someday I'll find a decent one. As some of you may know I do have a 6 speed Legend coupe, which is going through a 3.5 hybrid swap (3.5RL bottom end, Type II cams, and intake manifold). However, just recently, within the last month, over at the Legend board it was discovered that there were some serious gains found by swapping the RDX injectors over to the Legend. Of course, I already picked up a set and will be going in after initial start up on the Legend...I want to get a good baseline for performance with this 3.5L

Anyway, looking at the two injectors, the RDX has 12 vectored passages for fuel, making atomization MUCH greater, additionally at 38psi they function as 410cc injectors, which reduces the duty cycle on the injectors. I have never seen the CL-S injectors but I was wondering if this kind of upgrade might be worth it in the CL-S. The Legend, right now, thanks to Sr5guy, with a basic tune, is showing 12lb-ft of torque at the wheels and about the 10-12hp to the wheels...just thought I'd share, I know it would take a tune in the CL as well, which may be more difficult, but, again, might be worth while.

 

U gonna need engine managment/ thread

 

How low can you run the (minimum) psi with the rdx injectors.
If they are capable of running at 30psi I bet you could run these without a tune.

 

Yeah, I thought maybe that was where I should have been with this, but, also thought it might get more exposure here. Advice noted and taken...NSX guys are seeing 37wtq, Legend is getting up there with better tunes, hopefully closer to 20wtq, that is awesome, that's like having another 300cc of engine displacement, pretty sweet. I will search for pictures of the CL-S injectors, see if they are the single common pintle valve with no vectored passages, if they are, it might be worth it, as the better atomization is the primary reason for the gains.

 

Key Word. There isnt a good way to correctly tune the 2g

 

low fuel pressure would not help get any gains too

 

The spray pattern would turn to shit.


The injectors would show decent gains if you have the supporting mods plus the ability to tune. Most dont, so its a pointless mod.

 

Wow, that really sucks. I mean, obviously there are a few things to modify, but, I had no idea that the CL-S was a lot more difficult to tune. For best atomization the injectors should be run at 55psi, however this does require modifications to injector pulse...I thought there were even more hardware/software programs out there for the CL-S

 

Nope. All the piggy-backs on the market seem to be over-ruled by the stock ECU. You could get a standalone but thats a pain in the ass to get running.

 

i would be willing to bet that with little or no modification this J&R ecu/megasquirt piggyback theyre using on the 4th gen TL side would work

 

Possibly, but when all is said and done, you're in it for $2k.

 

hey when you consider headers where 1000$ exhaust full cat back 1000 $ if you've gotten to the point where youve done every possible mod ... if another 20/30 hp could be squeezed out id have been all over it

 

True, but thats if their ECU works for us. $2k just seems like quite a lot for a piggyback, especially when you can get a full stand alone for $1500 - unless you have an automatic transmission. In which case, you need a piggyback.

 

I would too. The largest difference is the DBW.

 

well reality is this is the megsquirt III it is a full standalone only reason the stock ECU is retained is to run the dash and a/c controls etc

 

Exactly, which isn't needed in the 2G since we're not CANBUS.

You can run a full stand alone and still retain dash controls.

 

not sure cause AEM told me there EMS wouldnt run the dash

 

AEM says that because they dont support it. Getting info from them is like pulling teeth.

I have first hand experience with it. The dash works. The A/C works. The a/c compressor clutch works. The IACV works. The tach reads properly. The gas gauge works (since its a direct feed from the tank). The speedo needs to be configured. The coolant gauge is the only one we're working on.

 

so im not sure if were not spliting hairs hear anyway even if this thing is piggy backing the stock ECU the J&R/megasquirt has full control over all engine parameters with no interaction from the stock ECU

 

I dont disagree with that. Its just the price point that Im bringing up.

Its an excellent option if:

1) You have an auto tranny

2) You have a 3G TL/7G Accord

 

wanted to revisit this ... what would be the low range of stock fuel pressure ? and if the fuel pressure reg was crushed i.e. the comptech supercharger instructions method how much psi would we gain