JohnnyTightlips
Motorhead
I thought he meant dump tube so I was going with that lol. I have the Kozmic DP and it fits great on MS3 Juan.
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The aeromotive should have more head room.
I was able to do this on an aeromotive stealth 325 (gen 1 pte 5862). But with larger PI injectors. I ran out of pump just over 600whp
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A couple of notes about kw's, since I have upgraded springs on both the front and the back.
I have 500lb springs on all 4 corners, it is a firm ride but not teeth chattering. The higher in spring rate you go, the smaller your adjustment window will be on the KW's. I wouldnt put more than linear 500lb springs in the front or rear. (KW uses 400lb springs in the front, and I think 250~500lb progressive in the rear)
There is a bit of squish in the front suspension, that is the hydrobushings and not necessarily the coilovers.
Are you feeling a lot of squat when you accelerate or take datalogs?
Ok, here goes....
One benefit about buying hardware to convert the rear to a more common size is the huge market for springs. I maxed out the rear KW springs and still wanted to raise it up another 1/4" or more.
If the front is firm enough for you now, I would suggest 400lb springs in the rear. It will still keep the rear slightly oversprung for nice handling without being too stiff.
Let me explain what I mean about the adjustment window on V3's. I will use the front end as an example since it's more apples to apples for you and me. When I jumped from the KW supplied 400lb springs to the 500lb Hypercoils, I had to adjust the compression to a firmer setting to keep up with the spring. Sounds reasonable... except that it wasnt 1 click, it was about 3 or 4. Any setting lower than that would feel like a slightly blown strut since the spring would be firmer than the damper valving. From a durability standpoint the dampers can definitely handle 500lb springs on all 4 corners, but you wont be able to go softer before getting that blown shock sensation. Also you will have a limited range to firm it up before you hit the max setting. So that's what I mean by a smaller adjustment window.
As far as the squat you are experiencing, you can try lifting the rear if possible to give you more mechanical anti squat. This of course is done by changing the angle of the rear trailing arm as its lifted. Firmer springs will help, but I dont think you will need to go up to 500lb. As is, I am soon going to swap my rear 500 to 400 springs.
One thing to note before dropping money on springs and hardware, the "squat" you may be "feeling" is probably front end lift. Up until 6 months ago I had a tr10 FMIC, I swapped back to a TMIC and did some sealing in the front end, and have reduced a good amount of lift. The lift I was getting felt like squat when accelerating, except the steering wheel would get very VERY soft, and the front tires would get unsettled very easily at speeds over 60mph. I am telling you this because of the big hood scoop you have, and the replacement smiley grill. Any air fed through the fenders and hood scoop, force air into your engine bay and pressurize it. This causes the air to leave through the bottom of your engine bay and lift the nose of the car up. If so, I bet you have a ton of front end nose dive or "squish" when you hit the brakes on the highway. Not only is this extremely dangerous from a handling perspective, but it doesnt allow air to pass through your radiator or front mount and shits on your cooling capability. If this is the case, you may want to address it first before revising your springs.
First few pics don't seem to work. excited to see this work out.Thanks for the advice! I took it and ordered the ground control kit with 400lbs/in springs. I think you are onto something with the front end lift as well, but haven't had a chance to figure out what I'm going to do about it. I already get vaporlock from my aux rail getting too hot when I idle too long.
Anyway, I went ahead and bit the bullet. Purchased a standalone boost controller and 4 port EBCS. The controller is the Cortex by SIRHC Labs.
Pretty simple looking kit:
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Install wasn't too bad either. Lately I've been obsessing with sleeving all wiring and making everything plug and play lol:
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Installed it in the glovebox and pulled the wires along the rear firewall, same path as the WOT box:
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The TPS signal and Tach signals were cake, but the vehicle speed was a bit of a pain in the ass. Ended up purchasing an adapter they make that runs off of an ABS sensor. Unfortunately that didn't work because we have a weird Magneto-Resistive type of wheel speed sensor. There is a 10.8v bias on the signal wire, and the AC component is superimposed on top of it.
Ended up getting it to work by adding a 0.1 uF capacitor to block the DC component. Not too bad, but wish they had it in their instructions. Looks kind of shitty and hopefully a lead doesn't break, but it worked:
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Now comes the fun stuff:
It detects the gear you're in by taking the ratio between the tach signal and the WSS:
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Once you log all the gears, you can enter the ratios:
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Voila, gear detection (blue line):
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There is a bit of noise, but I think I can fix it by increasing the scale to increase the difference in ratio between gears 4-6.
The software itself is super cool. Up to 6 different profiles that you can easily change on the fly.
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It also has full PID closed loop functionality, on a per gear basis. Which is super sick:
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It even has 2 additional outputs that you could use as a progressive meth controller.
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Anyways, I also installed the 4 port EBCS and swapped out my WG spring for a 5.80PSI spring. Not sure if I'll be able to hit 36 PSI with it, but I can always increase it. I'm running a control frequency of 18Hz on the solenoid to get the maximum usable linear range on the solenoid. Plus with the lower frequency the WG sounds insane when the EBCS comes in lol.
An EWG on a 6psi spring on a built motor speed is pretty hilarious. Super loud and I don't go anywhere lol... kinda like a civic with a fartcan. Being able to hook 1st gear is a pretty nice feeling.
I've only just started the tuning process, but it seems like I have enough resolution to do what I need to do. In 3rd gear 40% WGDC correlates to about 20psi boost on the 5.8 psi spring.
I'm planning on using my new 10hz GPS in conjunction to tune every single gear. I already started with 1st gear and discovered anything over 8 PSI yields a slower 15mph - 35mph time. Just switching from a 3 port to a 4 port and lighter spring improved it from ~2.4s to 1.7s. The weather is still pretty cold, so I can probably increase boost a bit in the summer months with more traction.
Sorry this post turned way too long. Overall I'm insanely happy with it and excited to be able to hook. I can also get much more correlation between throttle position and boost than I could on a 3 port. This will be perfect for autocross... If it ever happens with this covid-19 BS.
I'm probably gonna start a new thread for the EBCS, because I think it deserves it. I'll probably still update this with it as well though.
Hello,Yeah it seems like fueling is not an issue, I had a Walbro 450 ready to drop in, but I think I've about maxed the turbo and I am at the absolute limit of the PI, with a little bit of headroom on the DI for open loop fuel correction.
As promised here's the final power revision:
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I did end up taking care of the lean spike at 6k, smoothed/increased the boost, and added a little more timing, but I kept spinning 4th gear with the added timing so the log is a previous revision. This log didn't seem to have any spin, but the numbers are a little high so take it with a grain of salt... I'll be hitting up the same mustang dyno I used for the 7163 in a week or two, my guess is ~550whp.
All in all the thing feels insane now and what I imagined a BT built motor speed to feel like, AND I STILL HAVE MY SPOOL. The turbo is definitely a bit out of it's efficiency range. I have a meth injection kit sitting around so I will be adding a DO1 nozzle pre-turbo and a D03 pre-intercooler. Hoping that this will reduce the pressure drop through the intercooler and drop the effective pressure ratio at the compressor a little bit.
Hello,
Would you mind sharing the log file of this run in .csv format? What kind of duty cycle are you running with those 875cc PI injectors?