Nick_d_TII

iTrader: (6)

(just had a long post written out and lost it.)

Ok so I pulled more fuel, its getting better, going to try and pull the fuel up to -5% correction on low rpm vacuum operation.

Will post logs when I get home.

arghx

iTrader: (3)

in that log you posted with the lean spot (don't have a chance to go through the log itself now), you were at steady throttle right? It wasn't a lean spot from a sudden stab of gas pedal?

What is your injector staging rpm? I don't think you can log primary and secondary injector pulsewidth on the s4 Rtek 2.1 , that would help us know if it's a staging issue. What type of resistors are you running for your secondary injectors? 10 watt 10 ohm? If you don't have a stock 87 resistor pack I would recommed 6 ohm resistors (or just wire in an OEM resistor box).

WingsofWar

from what his logged showed it looked like there was a pretty decent spike around 1:31 of the recording.

Nick_d_TII

iTrader: (6)

Well, yes and no... sometimes at steady throttle, but more so with throttle increase, and its not a lean 'spot' from sudden stab of gas. The Narrow band o2 gauge goes completely lean for like a +4-5 seconds(1 one thousand, 2 one thousand, 3 one thousand...), and almost goes off when I step on the pedal from cruising... and the car feels sluggish and the NB02 goes red, almost black.

Staging is at 3200, stock resistor packs.

I did up the fuel to about -5 correction under vac and low rpm and yesterday on the way home I didn't notice any lean issues actually seemed a little rich (green on the NarrowBand). I'm thinking -20 fuel correction under vac, low rpm operation was my problem.

I'll post up some logs tonight...

Thanks! I think this has been a great experience and would recommend anyone who has a RTEK and a wideband to do it! Or post up results...

Nick_d_TII

iTrader: (6)

Ok, so its much better. I've been going back and forth on the lower rpm/vacuum area, went to -5% fuel correction and it was running way rich, now I'm back up to about -18% and now see slight lean when rolling onto the gas... but its running great. Still seeing AFR's in the 10's when slightly overboosting to 8-10psi. But the WG is ported still not quite enough though.

Thanks

Nick_d_TII

iTrader: (6)

Check it out. Since turbo2ltr mapped out my maps heres one for viewing pleasure.


The image attached is an incomplete screen shot of the excel document I've attached zipped up.

Anywho...

arghx

iTrader: (3)

I'm not sure what this will eventually look like, but that table would be more useful if the rpm and boost reference labels were somewhere for each axis

NJGreenBudd

iTrader: (1)

hey, sounds like your getting closer just had to pull enough fuel. Actually I am interested to hear more about the timing maps. I have been using the load based stuff since I wasn't sure about the rpm vs boost method. I am planning on turning the boost up to 15psi this summer with my new VMIC and would prefer to switch to MAP based timing, I was trying to find a good starting map for my setup but it looks like I just found it.

So, arghx, do you think the last map you posted in this thread would be okay to start with for my setup?

Thanks man.

BFGRX7

iTrader: (2)

NJGreenbudd, OK, little confused. I thought we had to wait on going load based (MAP)? Is this true, or are we just waiting for the the "switch" that automatically changes this mode? If we can just enter our own maps and get rid of the AFM this will help me tremendously. I'm relaying info to my engine tuner as I just don't have the time to learn all of this myself so thanks for the help.

turbo2ltr

iTrader: (1)

Yup, you are confused.

MAP (manifold absolute pressure) based timing mode changes the way the ECU looks up timing numbers in the timing map. It has nothing to do with fuel or the AFM elimination.

BFGRX7

iTrader: (2)

Hey, never claimed to understand it!!! ;-) Now, if you want your suspension dial in properly, I've got 10+ years training in that.

NJGreenBudd

iTrader: (1)

Right, as far as I understand it "Load Based" timing is the default setting for the Rtek 2.1, but you have the option to switch to "MAP Based" timing in the Rtek which uses RPM vs Boost to look up timing values. You still have to keep the air flow meter at this point with either one. We are all waiting patiently for the AFM delete though.....

Nick_d_TII

iTrader: (6)

I sense some thread jacking going on... j/k.

Well, I did a nice third gear pull this morning and it seemed to be great no hesitation or stutters, but almost seemed to lean out at the top 12.57afr.(butt dyno says fast) I am still seeing slight lean conditions when rolling onto the throttle.

Airflow seems to top out at 26.3 lbs? at 8psi. Once I up the boost to 10-12 will I have problems tuning for it?

BFGRX7 come on up to Oregon and help me get my suspension dialed in. I have a full bushing kit that I need to install...

Rule of thumb I've heard is 15 Deg. w/ 12 split at 15psi at peak torque.

Thanks

BFGRX7

iTrader: (2)

LOL! Nope, not about to highjack your thread-TOO badly! I can search and read on my own! As far as your suspension, get a 12ton press from Harborfreight and I'll send you pics/instructions on how to do it-quickly! Corner-weighting can be done by a few people in your area.

Nick_d_TII

iTrader: (6)

Here's a video with a side by side log (you can here me start the log at the begining of the vid). Seems to be running great! It was a beautiful day, and a great little drive. Third gear still feels a little sluggish in the midrange rpm probably too much fuel still. Maybe could add a few degrees of timing?




Thanks!

arghx

iTrader: (3)

don't touch the timing unless you are on a dyno. On Rx-7's that were running decently I have never been able to pick up much power from timing adjustments, at least on unleaded fuel. You may find a 2 hp increase and just more risk of detonating. You'll pick up more power from a small change in the weather than from more timing.

lean the car out some in the 5-8psi area, or wherever it was I saw that the AFR was hitting 10:1ish. At the boost levels you are running there is no reason to be richer than 11:1 IMO, not if you have a decent timing map and you are on 93 octane.

arghx

iTrader: (3)

hey check out these articles called "You CAN be too rich" http://www.innovatemotorsports.com/resources/rich.php from Innovate Motorsports and "Spark timing myths debunked" http://www.innovatemotorsports.com/resources/myths.php It's not aimed towards a rotary (so don't get too caught up on the exact numbers he uses) but it gives some interesting principles to consider.

Nick_d_TII

iTrader: (6)

Yep, I'll leave the timing, as you said, it wouldn't gain much. I've reviewed the logs and still hitting 10afrs at 4900@6-8psi through 5500@6-8psi. Going to pull a little more in those area's, but only like 2 clicks at a time as its getting close. My timing map is -1 degree of the entire map you have posted earlier in this thread... I'll be upping the boost to 10-12 psi once I get a EBC and after I see what the dyno shows (afr's and HP).

This is what the guy said about the turbo when I bought it over two years ago "Hello sir , compare to the stock unit lag is only about 300 rpm later than the stock unit, so pretty much is not noticeable, but when this unit starts to shine is after 10psi where the stock one falls on it's face, also the air temp will be cooler than the stock compressor. The Compressor is a Garrett TO4B .60 A/R" (thats just the housing though) I don't know what wheel it has. Maybe someone can decipher it...

Another little vid... just for fun and a couple pics of the turbo.

Nick_d_TII

iTrader: (6)

Although I have upped to -9 fuel correction in high vacuum areas around +-3k, still getting lean issues when rolling onto the throttle, basically cruising then just a little more throttle, ~16afr...

solareon

iTrader: (1)

this may seem like a dumb question but what are you using to mount your camera in the videos?

Nick_d_TII

iTrader: (6)

Its kinda rigged... Its a magnetic base for a dial indicator zip tied inbetween the bins in the back and the camera threads onto it..

Nick_d_TII

iTrader: (6)

I went to the track for some quarter mile runs, it didn't blow up, but it wasn't as fast as thought it would be. This is stock boost, slight creep in fourth to 9-10psi.

14.5 @ 99mph

http://s272.photobucket.com/albums/j...-16-09_PIR.flv

arghx

iTrader: (3)

your car is nearly as fast as a stock FD at only 7-8psi and you are disappointed???

Nick_d_TII

iTrader: (6)

I'm in no way dissapointed, I just thought/felt it would be closer to 13's. Which should be easily obtained when the boost is raised to 10-12 psi. We'll see how much HP this saturday, and will post up results.

I'm not a whole lot into drag racing, but it was fun for sure, and I had a great time.

Nick_d_TII

iTrader: (6)

223hp and 191tq to the wheels, I figured this is about where I would be. Its a little rich in the middle still hence the droop in power in the mid range. Here is a pic of the log, and a vid of the run. Also attached the log for those with the PLviewer and an image of the log.

Time for a boost controller. Any Suggestion/Recommendations are appreciated.

http://s272.photobucket.com/albums/j...t=P5124537.flv