When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I posted it up in my build thread, but I figured I'd repost it here.
I dyno'd my car for the first time last weekend. Car did well - didn't get hot or have igniton break up, or spray apex seals out the mufflers. Can't ask for much more than that.
Ultimately, the care made 539whp at 25.5psi and 407wtq at about 26.5psi. I had trouble getting a flat curve with the internal wastegate and wasn't able to get it completely flat before we had to finish up.
Wastegate duty cycle was set soft in the low range which is why spool up is so slow. It makes 20 psi by 3500 if I turn the DC% up, but we were walking a fine line of over/under boosting on the dyno and left it soft for now. We actually hit 305kpa boost cut a few times around 4500rpm when trying to make changes to the boost curve. Not sure what the torque was, but I’m sure it was a big jump. Pretty amazed by how well water injection worked.
Next step will be to get closed-loop boost control working on the street and pick up some serious low end and top end power
Overall, I’m pretty happy with the power the car makes. It’s a handfull on the street. Zero traction in 1/2nd gear. 3rd hooks up okay, but definitely moves around a lot.
Everyone that rides in the car can’t believe how long the power band is. It just keeps pulling and pulling.
Here is a quick rundown of the setup:
Engine:
Late S5 TII irons with FD castings
Pineapple Racing “Large” intake street port template – Makes around 14” of vacuum at 1000rpm idle. Pretty lumpy and a lot of overlap at part throttle.
S5 TII rotors and housings
Earlier port opening by about 3-4mm. Stock closing timing
What are you using to control the water injection?
I'm using a AEM 200psi pump and a Devil's Own 2.25 gallon tank mounted in the hatch area. AEM 1000cc nozzle sprayer.
I'm actually using the ECU to pulse the pump. The Megasquirt has a 3D map that outputs pump duty cycle by psi and rpm. It's super easy and can be tuned from the laptop. I also have an AEM water meth gauge that gets data logged so I have an idea of how much water it's using.
very nice. I have a very similar long block and I'm running s5 upper and lower intake manifold. And a t51r Kai kit. I'm expecting similar results. This is why I asked. Good numbers for pump man
very nice. I have a very similar long block and I'm running s5 upper and lower intake manifold. And a t51r Kai kit. I'm expecting similar results. This is why I asked. Good numbers for pump man
Thanks, I appreciate it. The setup worked really well, but I drove the car a lot and was concerned with reliability in the long run. The car is currently under the knife getting an aluminum 5.3 LS, twin EFR 6758 turbos, T56 Magnum, and Ronin 8.8" IRS. Should be bulletproof and good for another 200whp if I need it lol
one thing I am debating is running a dual egt setup. I'm not a fan of tapping my manifold. And I'm trying to decide if the s5 lim since it's far superior to s6 of it's needed with my setup. Just for monitoring/tuning capacities.
one thing I am debating is running a dual egt setup. I'm not a fan of tapping my manifold. And I'm trying to decide if the s5 lim since it's far superior to s6 of it's needed with my setup. Just for monitoring/tuning capacities.
any thoughts?
EGTs are easily debatable. You'll get different reading depending on where you take your measurements and how well insulated your manifold is. With the Turblown IWG manifold, it's pretty straightforward since it's pretapped and the same distance from the port. The trouble I had with EGT is that the extreme rotary temperatures damaged my nice Omega thermocouples. After a day on the dyno, I stopped getting readings and after I pulled the thermocouples, they were deformed front he heat.
10-06-16, 02:10 PM
