Corey Maurer

couple guys on the tib forums used to run that.. most ran the water wetter from royal purple i think it was?

s2000Junky

Redline makes it. Can find it at O'Reilly's

vxn12

For those who are running more than 10lb of boost, would it be better to ditch aftercooler and do water/meth injection? Anyone know how much pressure loss on the aftercooler? Has anyone tried this?

s2000Junky

No way. A/C only loses .5 psi and I would strongly recommend you keep this in place. Water/meth works awesome... better then any other cooling method, but its only squirting when your in boost, which is a small percentage of time during your driving. You need to have another cooling measure in place during idle/partial throttle running. A SC with A/C and water/meth injection is the ultimate set up period. My numbers speak for themselves. My car runs very consistent overall, and I don't even have the upgraded heat exchanger, just the stock dinky Comptech one.

And just to add, if you want to make the most power, typically run more % meth = more timing, more complete combustion. If you want to get more cooling ability then run more % water. You can run 100% of either if you want. Your boost level and set up/tune will dictate some of this so it really comes down to a bit of experimentation. The Typical is 50/50 Water/meth. I've played around with all ratios and for my set up 75-100% meth works best.

If you wan to talk to a guy that ran A non After cooled Comptech SC on 10psi with just water/meth as intake cooling ...talk to bluemetals. I don't think he ended up with good results for long. I believe he scored a piston. He is running nitrous on a new motor now, go figure

urBan_dK

I ordered a Frozen Boost Type 118 heat exchanger which will be arriving tomorrow with a Bosch pump. The only bad thing I can say about it is it is a burly bar and plate style, and weighs about 14 lbs compared to 6 pounds or so for the SOS upgraded exchanger. I have been logging results and IATs get up to about 140 with my stock Comptech exchanger.

s2000Junky

^^^ good to know Brad, is this an average? What’s the outside temp when measuring & driving conditions?

Let us know what your results are with that heat exchanger after the instillation and if you feel it’s a good alternative to the high $$ SOS exchanger.

Thunder-rush

That's the heat exchanger I installed. As big as a intercooler, very efficient.

urBan_dK

Interested in how you mounted it up. PM me if you can. Thanks!

urBan_dK

This is the max I have seen since installing the aftercooler. Probably a 70 degree day after a pull through 4th Gear on the freeway. Haven't done any repeated pulls to really "stress" the system, as this is where a larger HX would shine. As I plan on doing track days next season, I will need a system that doesn't get heat soaked in a 20 minute session.

Cruising temps at 60 degrees are usually around 115-125 or so. This seems unusually high to me as well, I would think this could be quite a bit lower with a better pump and HX.