IS350 Revision S/C
#106
Racer
iTrader: (2)
Hey man, I've been meaning to get back to your message! Have you started your build? You are friends with Elias, right? If you need fabrication parts, I'd be happy to help you.
This Rotrex is actually the blower the HKS setup utilizes....or one trim larger then the HKS blower. The plots are pretty spot on for our engine. Check out what Stew ended up with if you haven't already. We've been back and forth on our projects for a long time now!
https://www.clublexus.com/forums/is-...350-dynod.html
Curve:
This Rotrex is actually the blower the HKS setup utilizes....or one trim larger then the HKS blower. The plots are pretty spot on for our engine. Check out what Stew ended up with if you haven't already. We've been back and forth on our projects for a long time now!
https://www.clublexus.com/forums/is-...350-dynod.html
Curve:
#112
I would have went with a rotrex unit from the start.. I learned a lot about the motor dicking around with prochargers but I also wasted a nice chunk of money in turn.
No regrets, the car runs exactly like stock with tons more HP. It runs smoother than many protuned cars I had making similar power.
I wish it could make better use of methanol but I'm digging more into that aspect as we speak.
#113
Driver
iTrader: (3)
Mike, you give me great hope. With your dyno, I think we ohio boys may make it to 400whp in these cars, with the right tuning and maybe some PPE headers. You're energizing me to dump some resources into this MAPECU setup I'm working on. May have to wait until spring though to get it all finished though!
#115
Driver
iTrader: (3)
Just a heads up as you go down that road, careful about running too much water/meth during winter months Adam. Both mike and I have had misfires that we think may be linked back to this issue. It's to the point where I do my best to stay under ~4psi in winter when spraying. Both of us are running plugs in good condition and both of us have had the issue.
#116
Pole Position
iTrader: (5)
Just a heads up as you go down that road, careful about running too much water/meth during winter months Adam. Both mike and I have had misfires that we think may be linked back to this issue. It's to the point where I do my best to stay under ~4psi in winter when spraying. Both of us are running plugs in good condition and both of us have had the issue.
#117
Thanks guys.
You'll be moving UP in power before I do. I'm addressing some potential inefficiencies with the system...I think there's room for additional improvement before I start trying to tune the beast!
One thing I've really been looking at is IATs with and w/out injection. This car and s/c heats up quick and is VERY slow to cool. I find injecting (even progressively) at 2psi is too much for the engine to efficiently use....at least with my driving habits...I'm hitting 2psi at quick throttle blips.
The goal is to make power efficiently and effectively not just a dyno number. Without getting into to much detail right now Ill be looking into an air to water intercooler.
I'm also moving to a Tial 50mm bov. In past experience I found Tial using a 3lb spring does a great job at keeping the valve open at idle...this will help by dissipating hot air and not having it expand further to the FMIC. Also, it should blow off properly at all boost levels up to 8psi. I am not happy with the performance in the HKS ssqv in this application...Synapse either.
You'll be moving UP in power before I do. I'm addressing some potential inefficiencies with the system...I think there's room for additional improvement before I start trying to tune the beast!
One thing I've really been looking at is IATs with and w/out injection. This car and s/c heats up quick and is VERY slow to cool. I find injecting (even progressively) at 2psi is too much for the engine to efficiently use....at least with my driving habits...I'm hitting 2psi at quick throttle blips.
The goal is to make power efficiently and effectively not just a dyno number. Without getting into to much detail right now Ill be looking into an air to water intercooler.
I'm also moving to a Tial 50mm bov. In past experience I found Tial using a 3lb spring does a great job at keeping the valve open at idle...this will help by dissipating hot air and not having it expand further to the FMIC. Also, it should blow off properly at all boost levels up to 8psi. I am not happy with the performance in the HKS ssqv in this application...Synapse either.
#118
Driver
iTrader: (3)
Thanks for the heads up. "Winter" here in Houston consists of a few days with a low in the 30's, and mostly lows in the 40-50's though, haha. The kit I'm installing does the progressive spraying, so I will have it start spraying around 3.5psi and it will ramp up to 100% spray by time it hits full boost around 7.5psi. If you arent running the progressive spray, maybe it's just too much meth at once when intake temperatures arent very high to begin with? I'm brand new into this territory so just a guess.
Mike, this is news to me. Very interesting. We should plan to get these things to the track in spring! I'll probably be on DRs when i go, so you're more than welcome to toss em on for a couple passes and see where we end up.
I'm going to be focused on attacking it from a tuning perspective, and ill being going for more of an all around, area under the curve, "1/4mi tune" than a "peaky" dyno queen tune. Though if its close and i have to sacrifice some area for 400whp, thats the way it'll have to be :P
If i can figure out where you're squeezing that 372 out of, I'm thinking that 25-30whp is doable. Even if that means machining that coveted 77.5mm pulley to get it :P
Last edited by stewb10; 09-13-13 at 10:06 AM.
#119
This may have been asked but how much did final costs come to? I have a 06 IS350 as well and I'd rather save up yo build a SC kit as well than save up for an ISF as ISFs still going for over 32k on the internet whereas I scored my 06 is350 fully loaded with 80k miles for 16k