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ITB'd Stock Port 6 Port NA Dyno

Old 02-06-16, 02:04 AM
  #26  
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Originally Posted by rotarygod View Post
It definitely needs some tuning help or maybe even some better ignition but for a stock port engine I'd say that's going to end up making some nice power when it's all said and done. It's certainly very promising. I wouldn't mess with the exhaust at this time. Get some heat shielding in there and get a nice insulated cold air intake on it. Then get the tuning straightened away until you see a nice smooth curve. Only then would I start to second guess the exhaust. You have stock port timing. The exhaust isn't really hurting you right now.

Where did you get the intake manifold?
Thanks for the comments, folks.

All the small stuff has been gone over. Grounds cleaned, new plugs, et,. The car is at the tuner right now to work on smoothing out the tune.

My next plan of action was a mazdatrix heat shield over the exhaust and hopefully a filtered source of cold air. I was debating taking a t2 hood and installing a custom panel filter in the vent to get cold clean air in easily. I'm still on the fence with this idea.

As for the manifold, I got it off a forum member a couple years back.

Last edited by djSL; 02-06-16 at 10:50 AM.
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Old 02-09-16, 11:53 PM
  #27  
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after all you've spent this maybe the best 400. you'll likely gain 30-40, or more if ignition is what was it hurting you.
https://www.rx7club.com/2nd-generati...6a-etc-762225/
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Old 02-10-16, 01:15 PM
  #28  
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An ignition amplifier giving 30-40 more hp on an unported nonturbo that is already putting down 170 rwhp? That's not going to happen.
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Old 02-10-16, 03:14 PM
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I'm not sure that ignition is even the problem. Fuel is solid as well. After talking with the shop, they noticed some weird ratings on my tps compared to the throttle input and feel that the hesitation in the top range was from that. I'm going to measure for dead spots and probably order a new tps.

I plan on doing some data logging this weekend and I'll post it up. The tune has been smoothed out since this post as well.

Heat shielding is my first item of business. The intake manifold gets hot to the touch on the lower runners.
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Old 02-11-16, 07:41 PM
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Originally Posted by rotarygod View Post
An ignition amplifier giving 30-40 more hp on an unported nonturbo that is already putting down 170 rwhp? That's not going to happen.
ok ok but here me out..
the fc guy in my says even my 300+hp turbo car runs fine at 11 afr and boost on Stock FC leading and trailing.
but the FB guy in my says it can't possible be good enough.. we DLIDFIS users won't use the stock fc coil.. i'll be using 2 bim024 and 2 aem dumb coils...

im guessing it comes down to charge time. the dizzy based coils only get soo much dwell time ever decreasing with rpm but..
with EFI the coils can be kept hotter thru out the rpm band because the ecu can start the dwell sooner. but the dizzy can only stop the charge sooner.. shortening the dwell??

right?

what would happen if i put 2 bim024 and 2 coils to the EFI computer... replacing the stock fc shared leading coil? im guessing it wouldn't be ideal because i can't change the dwell time in the ecu, and the coils may want more then what the stock fc computer gives... but i could do that on an aftermarket ecu.. i guess the end of the rtek is coming sooner then i wanted.
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Old 02-14-16, 01:28 PM
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^you lost me lol. For my modest goals with this current motor, I'm sure the stock fc coils put out enough. However, the thought of upgrading to AEM coils has crossed my mind.

I'm also looking at getting a phenolic thermo spacer made for the lower intake manifold from Pineapple.

Ultimately, I'd be really happy if I could get it to 180whp or a bit more before I build a new block in my spare time.
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Old 03-04-16, 08:16 PM
  #32  
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get that dip figured out on the upper range and rev her till she flattens out.
Also, E6x wont run 4 coils in direct fire mode.
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Old 03-08-16, 11:13 AM
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Dip figured out. It was the rev limiter being set too low. That is unfortunate about the direct fire though. I was seriously considering that upgrade. Any other nifty coil ignition upgrades that could help? Besides an additional wired in spark amplifier?
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Old 04-20-17, 12:43 AM
  #34  
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Add a heat shield to the intake to separate the header from the intake
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Old 04-20-17, 12:41 PM
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I was running a custom shield at that time. I plan on making a new one soon.
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Old 02-06-18, 04:11 PM
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Originally Posted by djSL View Post
I was running a custom shield at that time. I plan on making a new one soon.



Update?
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Old 02-07-18, 12:14 PM
  #37  
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No updates at this point. I lost a coolant seal in March of last year and decided to go full ham with a rebuild (peripheral port). Pineapple Racing is finishing the rebuild soon and I'll be back on the dyno for some tuning within the next month or two.
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Old 02-07-18, 12:22 PM
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Originally Posted by djSL View Post
No updates at this point. I lost a coolant seal in March of last year and decided to go full ham with a rebuild (peripheral port). Pineapple Racing is finishing the rebuild soon and I'll be back on the dyno for some tuning within the next month or two.


Ahh man that blows, but the bright side we're going to see a peripheral port? What sort of power are you trying to make and what rev range are we looking at?
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Old 02-20-18, 04:09 PM
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I'm aiming for 270whp and above. The power band will be fairly narrow, but I'm also adding a few inches to my current intake runner set up/velocity stacks to move the RPM range down slightly. I'll also be running a TII hood with a custom duct to feed cold air directly to the throttle bodies.
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Old 02-20-18, 05:38 PM
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Originally Posted by djSL View Post
I'm aiming for 270whp and above. The power band will be fairly narrow, but I'm also adding a few inches to my current intake runner set up/velocity stacks to move the RPM range down slightly. I'll also be running a TII hood with a custom duct to feed cold air directly to the throttle bodies.
Nice that sounds like a bad a$$ set up and I can't wait to see the end results. Keep us posted when you have the chance for dyno runs and such.
Are you racing?
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Old 02-26-18, 09:58 AM
  #41  
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Very nice output on stock ports. Well done!
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Old 04-18-18, 11:59 AM
  #42  
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Any update on this??
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Old 04-19-18, 11:45 AM
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Originally Posted by 13bREW View Post
Any update on this??
NOPE! The motor is still in the works due to a lack of reliable machinists. I'm hoping to find out some good news this evening. In the meantime, I've been gathering some more parts and foaming at the mouth.
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Old 12-20-18, 12:19 PM
  #44  
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Forgot about this thread, lol. The motor has been done for a couple months and is now tuned to 9k (minus some low end fine tuning). The new peripheral port made 252whp with my exhaust being the key limiting factor in power. If you're interested and would like more information, I have a build thread titled "the indecisive and slow s4 build."
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