Steve Kan tuning and dyno results

[Darius]

Getting the 240 on the dyno this Saturday and Steve Kan is flying in to tune a bunch of RX-7s, a MKIV Supra, and my RB25. I'm going to take lots of video and pics (and not post either, of course ) I'm shooting for 500+hp on my current fuel system and 93 octane: 660cc injectors and supra TT pump.

[krayton]

good luck. should be doable. i always hear good things about Steve.

why so small on the fuel end darius? get some huge injectors and a dual pump.

post the dyno sheets asap, very curious. also what are the specs on your turbo?

[Coolwhip]

truuu

[krayton]

truuu

sell him that A1000 pump

then lets get a group buy going on some 1600cc injectors

everyone needs 1600s!

[Darius]

Damn I wish! That and traction are my next phase of the build. I pretty much ran out of spending money this year. I knew I wasn't going to be able to upgrade the supra pump, so I just matched the injectors to the pump (hence 650-660's).

[Coolwhip]

hey matt i have something in the works that you might find interesting

more on that later.

[mattblancarte]

I can't wait to see the vids.

[gawdzilla]

good luck. sounds like a fun weekend. interested to see how that supra pump holds up. mine drew too many amps for the s14 wiring to support 500.

[Yellow4g63]

I'm going to hardwire mine don't trust the stock S14 wiring lol.

[gawdzilla]

I'm going to hardwire mine don't trust the stock S14 wiring lol.

if you do, you need to do it through the tank lid all the way to the pump itself. mine was pretty much hardwired up to the lid.

[ANVIL]

awesome, good luck. hope u reach ur goal. u building it for drag or what?

[BoostFab]

Steve is a Haltech & RX7 GOD....and tuning for that matter. He's local to me and it's nice to have great tuners locally accessible. sounds like a lot of fun.

[Darius]

I have read that he has tuned over 1000 cars, so I have high expectations especially for the price we're all paying.

For the fuel pump wiring, I'm stuck with what I have. If I "only" get 500 hp, I'll be happy with that for now. This tuning session will give me a good baseline and hopefully give me some more tuning insight. The future fuel pump will receive switched power directly from the battery charge wire (14.4V) with whatever I go with. Coolwhip, I'd love to hear what you're working on, so drop me an e-mail

[Booztd 3]

sell him that A1000 pump

then lets get a group buy going on some 1600cc injectors

everyone needs 1600s!

I sell 1600's all day long for 450 a set (top feed, low impedance, 6 injectors)

[coreansurfer]

will he be tuning on a dyno dynamic?

[Darius]

will he be tuning on a dyno dynamic?

I have no clue. I've never been there but this is the description on their website. It is a diesel shop BTW. I've never had a car on a dyno so don't mistake me for someone who knows jack about dynos . "SuperFlow dual eddy current load dyno."

[coreansurfer]

just curious because different types of dynos will give you different results

a good read on different dyno types.

http://www.mazdas247.com/forum....html

[Darius]

Tuning session was yesterday and things didn't go quite as planned. I was hoping for 500 whp from my setup but as with every other event with this car, something crapped out. I've been having studdering issues at WOT for a couple weeks but I figured it was the colder weather and I was running rich and my ignition wasn't up for the task.

It wasn't up to task yesterday either. Steve couldn't tune anything above 3500 rpm at WOT because the turbo would spool and the engine would immediately start to studder. He did an amazing job on the remainder of the daily driving cells! The car feels and sounds much smoother and is easier to drive. Unbelievable what a true professional can do for your tune. I'm not talking about some random dyno shop tuners either. This guy had my entire map tuned minus the WOT pulls within 15 minutes. He even went on a ride along with me to make sure the tune acted well on the street. I had some oscillating on very light throttle at 30-35 mph and he simply pulled some timing in the cell and the problem went away.

Overall, I was very happy with the tune that I got but VERY disappointed in myself when I didn't bring the car in shape for the WOT tuning. 188 whp was about all I got at 3500 rpm. Not bad considering this dyno reads wayyyyyy low and the turbo was not spooled. And no torque numbers because the d!ck at this shop didn't know how to operate their own dyno They didn't get the rpm signal from the motor for the torque calc. Didn't even get a print out of it...not that I wanted one but still

I'll make a vid of the footage I took (40 minutes) and post a link later.

[240z4u]

Don't sweat it dude. Not sure what you shelled out for your tune but the money you saved in fuel economy will prob. pay for that tune in time. Its more difficult to get non WOT conditions tuned IMO. I would rather tune WOT than part throttle. As far as I am concerned you got the important part sorted.

Sorry to hear it didn't go as planned, but glad you made some progress.

Evan

[Darius]

Oh most definitely. I used a half tank of gas getting there and I used only about 1/3 tank on the way home. Steve even tuned the low load and high rpm cells so when you rev the exhaust doesn't pop and backfire and act all crazy. I can rev it high and it sounds smooth as glass the entire time.

WOT is a fairly small portion of the map so I won't have any trouble tuning the rest myself. I just need to figure out what I want to do for ignition this winter. Looking at ICE ignition coil packs (www.iceignition.com) and an upgraded ignitor rewired so it is inside the car as opposed to the engine bay where it's hawt!@

[eh?]

Def something wrong with that dyno. 188whp at 3.5k is insanely high for an RB!

[Darius]

This dyno reads insanely low. I don't trust anything that came out of it since the guys operating it weren't even there 90% of the time to show the output. We're going to bring him into Des Moines next time. None of this BFE diesel shop nonsense...

[krayton]

Def something wrong with that dyno. 188whp at 3.5k is insanely high for an RB!

lol seriously

if it was 188 at 3.5 thatd be awesome

[Darius]

Here's a link to the video I made of the day.

http://www.youtube.com/watch?v=mCKbyJgOBBw

[gawdzilla]

how new are your plugs, and which ones are you running with what gap?

i'd try new plugs with tighter gap before you splurge on an ignition system.

[Darius]

I was getting brak up with BCPR5EIs so I changed to 7 coppers gapped down to 0.65mm the night before the tuning session. Still didn't change anything. Changed the ignitor among the 3 that I have and none of them made any difference. Pretty much narrows it down to the coils.

[gawdzilla]

interesting. I had an ignition issue for a while last season, so i feel your pain. Here's how it went, dunno how applicable it is to you:

ran Iridium 7s at .8mm on stock coils. ran great for a bit, then breakup started happening. breakup was super consistent. basically at an exact rpm it would start stuttering.

dropped coin and got splitfires and put them in. did not change the plugs on purpose just to see what would happen. still had breakup, but the sound was very different. the miss didnt sound "as bad" if there is such a thing.

went to copper 7s gapped down to .021" or .53mm. hasnt missed a beat since with these plugs and the splitfires. my old coils are still sitting on a shelf. i really should put them back on just for kicks to see if the splitfires really are doing their job. i'm thinking they arent anything special over OEM, but at least they cheaper than new OEM, and not 15 years old.

i say give the copper 7s another shot with a new set, gapped to around .5mm. if you get the same exact thing it might be time to look into the coils unfortunately. they're probably just too old.

also would like to add that my old coils really looked perfectly fine. all the connectors were good, those little springs had no corrosion, etc. boots looked fine and sealed tight. only thing i did notice was the black paint around the coil (where it bolts down to the aluminum brackets) was starting to chip off on certain coils.

[Darius]

That sounds exactly the same as my issue. I can watch the tach and tell when it is going to start studdering.

I'll pull the plugs and regap them to .5mm to see if that helps. Just sucks that such a small gap has to be run to even get them to fire. I'm tempted to just splurge on bigger coils so I can run a wider gap and get better overall ignition especially up top.

I've had my coils out numerous times and have never noticed any cracks or deterioration just like you said. Mine look perfect except the paint is starting to chip off of a few.

I think you should put your old coils on and tell me what happens. I'm really curious.

[krayton]

what you using to tune the car?

[Darius]

PFC w/datalogit