PixelHarmony

They said on the site the TSX and RSX SC aftercoolers are under developement. Would this be a front mount intercooler? How would this type of application work for a roots type charger?

xizor

no, its not a FMIC, that doesn't work for a roots charger. i don't know much about them, but it usually sits in the engine bay somewhere.

rmpage

With a roots blower the AC usually bolts directly to the compressor housing of the blower, or is sometimes integrated directly into it. This will probably be a bolt-on being that the compressor is the same type used in the RSX S/C. Given the already tight space between the cooling fan shroud and the intake manifold it will be interesting to see where they manage to fit the AC unit, as the outlet of the compressor pretty much slams air directly into the manifold plenum from the looks of things in the pictures on their site.

As for where they will locate the cooling coils and what they will use to cool them, I would imagine it will be a small heat exchanger tucked away in the corner of the engine bay somewhere, cooled by convection or possibly a thermostatically controlled fan. With the already high compression of the K24A2 and the high thermal inefficiency of the roots compressor, boost won't be much, so the aftercooler won't have to be all that extravagant.

Pure speculation at this point, of course. I'm actually very surprised that the aftercooler isn't a necessity given the roots blower's inherently high thermal inefficiency, even at very low levels of boost.

ACCURATEin

Thread resurrection...

Just saw where the aftercooler is in development, but not sure how long it has been.

Anyone with the SC thinking about getting one?

Big Ben

Where are you seeing that? Always looking for more goodies..I am acutally going to be in charlotte soon.

Tsx536

Are you talking about the one being developed by a member from club rsx?

This kit was made for the Jackson Racing Supercharger kit. We also don't have a good way to tune for it. We have the AEM F/IC, but I think Big Ben is still working out the kinks with it.

ACCURATEin

Let me go find the link where i saw it. You moving to charlotte or just gonna be in the area for a while?

..what all do you have done to your car? SC i assume?!

ACCURATEin

http://www.autocarparts.com/c_Acura_...it_m_Comptech/

Tsx536

I'm not sure if Comptech is still trying to it develop anymore. They stopped development on it even before they closed that last time. It was too restrictive and they found out it was lowering the boost levels too much.

Someone might want to give them a call to double check though. I remember seeing their RSX prototype on one of my visits there.

jmathew34

If you guys are meeting up the weekend of 1/11-1/13 I may be driving down for a party down there...

Big Ben, let us know.

rmpage

A NC gathering? Hmm...

ACCURATEin

I just got done ordering a belt and high boost pulley for my TL, but inquired about the tsx aftercooler while I was at it...

Nate said they actually did make one and tested it, but decided not to put it on the market due to the cost per horsepower ratio which was not so good. He said it would allow you to run higher boost with the cooler air.

He also said if some of the hard core guys are interested, they could probably make a batch of them and get them out to you guys that might want to look into this aftercooler.



Happy whining!

WlcTL

do they even have a website anymore? it use to me comptechusa.com but that doesnt seem to work anymore.

ACCURATEin

www.ct-engineering.com

DAYTA

Did Nate explain how he planned to overcome the fuel injector issue we have?

While it would be nice to run higher boost with an aftercooler, we'd still have to accommodate the increased airflow with more fuel. At this point, I don't think there's been a successful solution except for dual-ECU K-pro (which is not viable for 99% of us).

jmathew34

is there a way to see the duty cycle for our injectors? anyone know of any plug n play unit that can display this?

Big Ben

I am running a High Boost Pulley (3.0) on my tsx. We ended up putting stock injectors back in it and crushed the fuel regulator alittle more to allow more fuel to flow. I to have a 255 Walbro fuel pump which I am not sure if that is needed. Everything seems to be running fine. A/F are at 11.7 and I am running 10-11 psi. I am looking into an adjustable fuel regualtor but it would have to be a custom setup since our FR is in the trunk.

Big Ben

EDIT: 276 WHP and 215 TQ

CCColtsicehockey

yeah 11.7 is a tad bit lean there.

Big Ben

I disagree!! lol

I thought mid 11's to low 12's was perfect...Correct me if I'm wrong.

Ben

ELSpool

Your correct ben, mid to high 11's is perfect for premium pump gas.

DAYTA

Yeah I think that's pretty good. IIRC, I believe our standard S/C dynos put us at around the same A/F ratio (mid 11s / low 12s).

Speaking of dynos, got any new ones to post?

Tsx536

Yeah, that air fuel ratio is perfect for a boosted application. I've read you generally want close to 11.8-12.0 with forced induction.

Tsx536

Is aftercooler next Ben?

Big Ben

What are the gains suppose to be?

Tsx536

Well, it will just help the car run cooler. Reduce the temps, especially when running higher amount of boosts where the blower is spinning very fast. I don't know what the gains would be because one has never been tested for the TSX. I'm not even sure if Comptech would even sell a TSX version, I've only seen a RSX prototype, but if you're really interested you might want to call and ask.

ELSpool

At 10psi you probably blowing some pretty hot air, I wouldn't be surprised to see 20+whp gains. You guys should contact John and LHT performance in FL, they do alot of S/C honda stuff and have alot of custom water to air IC setups.

Big Ben

I gave them a call. There is one in development and he couldn't tell me much but he did say that the gains were minimal. He compared the tsx to an rsx which when they tested it got very little gains. The one for the S2k got 10whp. So it doesn't seem like it would be worth the money unless they come out with some dynos that show different.

tsx 2 nv

maybe you should just hookup a hidden nitrous system to make it cooler :P

rmpage

The gains from intercooling come from a combination of the cooler air as already mentioned, in addition to being able to advance the timing a bit further than you would otherwise. To get the most from an aftercooler you would need a retune. Otherwise I would not bother.

ELSpool

Im with rmpage, a retune is needed. I just can't see an old skool small roots style s/c feeding air to the point where cooling the charge makes little to no gains...