Xylene & Trans + tuning Results. Comments?

[tim87tr]

Here are my results, first time tuning with the Trans plus. Combo is stock engine/turbo/IC, 40's redstipe, 3" LT1 MAF, Extender 93, TB bore, powerplate, THDP, Hooker 2.5", test pipe, Scanmaster 2.1, MM BstC, PTS shift, NGK UR5's gapped .035 tight.

5 test and tune runs under 100 mph, 85 to 90 outside, car temp 175 to 180. Chip base is 19/17 timing, Base fp is 42 . Two(2) gal xylene in full tank of 93, about 96 octane final.

Run, Boost low gear, O2 min@mph, kr max@mph, notes
1) 18, 730@69, 1.6@76, +4* base spark = 23/21 timing
2) 19, 781@84, 2.3@70, same except +4% fp WOT
3) 19, 796@72, 2.8@72, same except -2* at WOT
4) 20, 765@86, 1.2@63, same except -4* at WOT
5) 21, 820@ ?, 0 kr, +4* base spark & -4* WOT (above 3200) and +6% fp at WOT

So the final tune is Base 21 psi, 23* timing, 42 lb fp; WOT 19 psi, 17* timing, 45 lb fp

Final couple runs the SM did not give me an O2 or mph readout for some reason (the O2 on run 5 was on a downshift readout and partial run). But no kr and that will be my settings for this mix and setup. Hope this is of help to any trans + users. Any comments welcome. I am just learning about timing, but I do know a lot of race chips are 26* and alky chips 23* with timing and boost scaled back in high gear.

I want to get some track times on this tune, the car felt strong. The stock turbo did spool slightly slower with the 23* BASE but still fast due to the BstC. Any downshift on this tune felt very good, more solid and fast response.

 

[tim87tr]

Ok, I'll reply to my own thread . Just got back in from dinner. Air a bit cooler tonight, about 80. I guess I got my missing info. Saw a guy from work in his Chebby truck as I pulled out on the highway. So I catch up to him and he does the "speed up you're not going to pass me" routine. So I lost the self restraint and kicked it down from about 70 mph. Got a 789@110 on the O2 with NO knock at about 19 lb boost for high gear. Also, BLMs amd INT are staying close to the 128. So the tune is good for my car, I know everyones car is different with the various bolt-ons, injectors, etc.

Any input on what you think of the tune, timing, etc. I am really a newbie on the timing, I could use a Timing 101 comment here. Just off the top of my head, someone that would know: UNGN, TurboDave, azgn, S. Wood, Leeper, etc. Sorry to name names , just trying to climb the TR learning curve ladder a bit.

One comment on the Xylene. I tried the two gallons first instead of the 3 to 1, 100 octane mix, since I wanted to get good results with a bit less. Cheap, but a good starting point. I have not entirely convinced myself to mess too much with the race gas because of the O2 sensors (killed them before), and am still a little leary of the alky due to the higher boost/detonation risk. My stock turbo may not be too efficient at higher than 22 lb anyway. Just looking for a good compromise at this point, looking to learn more, and have some fun. I'm going to get an EGT gauge soon.

 

[tim87tr]

TTT or second self-reply to my own thread, you pick

Just took the car out to cruise around. Same results, but the boost jumped to 22 with the cooler weather. Kind of scared me and I let out, but no knock. O2's staying high 700's, low 800's. Didn't change anything on my trans plus since everything seemed good.

Anyone have any input with using Xylene (or high octane) and the trans plus? I feel I am getting good results with this 96 octane mix, more along the lines of what 100 octane leaded would accomplish. I did not get knock at WOT the few times I layed into it.

 

[azgn]

I think before you will know anything, you need to go to the track and run it out........

 

[tim87tr]

Thanks azgn, there are a couple 1/8 mile tracks fairly close here so I plan on going to a test and tune maybe on June 28th. I will post the results. I would like to get a low 8. Their street class is 8.25 and higher. The one time I raced the GN for the 13.2, my best 1/8th was 8.4

 

[tim87tr]

Just an update on the trans + location in the car. I was out in the garage starting my work on that and looks like attaching it to the drivers side of the center console with velcro, just to the right front of the drivers seat, would work well. I had originally planned to put it in the center console storage, but I'm going to leave that for storage.

The wires can be run under the drivers side of the center console and the loose wires looped back between the right side of the drivers seat and the center console, so they will be hidden. When you are ready to make an adjustment, pop the trans + off the velcro, lay it on top of the center console storage, and tune your magic .

 

[salvageV6]

If your car doesn't leak too bad you can leave that pesky cover off too.

This is one product where a cheesy snap plastic lid would actually be a good thing.

 

[tim87tr]

Hey Salvage, my cover kind of snaps in place, maybe its a newer version. Since it will be located in the car, I am not going to put the little cover screws back in. Are you using the Trans +?

 

[Turbo__Tim]

Tim those numbers look right. An egt guage is needed, esp when running a 1320.

Remember to add 2 ounces of Marvel Mystery Oil with each allon of toulene added. You can get away without it for a while, but eventually...

You can put a velcro strip on the lid, and case of the Trans+ to act as a hinge, and it works great. I just close mine, press down on the top, and it snaps shut. Will not fall open.

Mine is located on the dash bezel just to the left of the steering wheel. Using a non-stock bezel, I used a hot razor to square out the 2 protrusions that prevent it from resting flat. Another way to do it with a stock unit is to velcro a spacer to the back of the unit, then vercro that to the dash. It will cover the dimmer switch a bit.

 

[salvageV6]

Yes I am running the T+ very nice.

Using the Maxeffort chip right now but TurboBob sent me a new Extender chip to try. I will be putting that in soon.

Been driving and working on the "new" GN this week which has the stock MAF and a Reds chip in it.

 

[tim87tr]

Originally posted by Turbo__Tim
Tim those numbers look right. An egt guage is needed, esp when running a 1320.

Remember to add 2 ounces of Marvel Mystery Oil with each allon of toulene added. You can get away without it for a while, but eventually...

You can put a velcro strip on the lid, and case of the Trans+ to act as a hinge, and it works great. I just close mine, press down on the top, and it snaps shut. Will not fall open.

Mine is located on the dash bezel just to the left of the steering wheel. Using a non-stock bezel, I used a hot razor to square out the 2 protrusions that prevent it from resting flat. Another way to do it with a stock unit is to velcro a spacer to the back of the unit, then vercro that to the dash. It will cover the dimmer switch a bit.

I am looking for an EGT guage at this time. I have been trying to follow that recent thread on it without much luck. I do use the MMO . Velcro hinge sounds like a good idea. I did sit my T+ up there by the dimmer to see what it looked like. What is the details of mounting it there? I may want to try that instead.

Salvage and Turbo_Tim, we will have to compare more T+ tuning recipes as we get them. Tim, I still have your email concerning using the alky and the extender chip.

 

[BEATAV8]

tim87tr,
How far are you from Byron? I have no idea where Paris is. Chicagoland GSCA will be up at Byron on June 30th, should be lotsa Buicks!

Anyways...
It's interesting to see your results with the Xylene, thanks for posting it!

I recently installed a trans+ w/ extender too. Base timing is 23/21 (recommended for 98 octane) I've been filling it with Sunoco GT100 and I haven't hit the limit yet. I'm up to 22 PSI now, running the base timing curve and 4% rich at WOT (830mv flat), 45 PSI fuel pressure, no knock retard. I just started to run out of injector too, the 009's are hitting 100-105% duty cycle. Will have to dial up the FP a little to get some more flow. Plan to take some data soon at 23/24 PSI and see how it looks. I'm leary of turning up the timing, I expect the engine will be more sensitive to that as compared to more boost. Will eventually try it, a little at a time.

Have DS files if anyones interested.

I'm also running a power plate and I think it helps alot. At the time I installed it I was running 93 oct gas and a lubrant street chip, knock retard was reduced from 4.5 to 0.

Turbo is a PTE 51. The MAF numbers really went up as I snuk up from 18 PSI to 22 PSI. I was seeing 180's at 18 and 230's at 22

Hoping to see some high 11's next time out to track. Got a 12.3 before the trans + / extender. Was also running in the dark back then.

 

[Red Canyonero]

Was also running in the dark back then.

Oh, and you're not now eh?

Brian Green
89 TTA

 

[tim87tr]

I'm a good 3 hours south of Chicago on the Indiana border. So won't make it up there too often. I may get over to Peoria for one of their meetings sometime. I will be on vacation a couple days here and will let you know of any more Trans + tuning results and hopefully some track times on this octane setup at the end of the month.

One question. Is my sig right if I am removing 4 degrees at WOT, over 3000 rpm. Then it would take out 4 degrees even in first and second over 3000 rpm, right? I had added 4 degrees to the Base timing and then taken 4 out at WOT to eliminate knock, see original thread post. Thanks

 

[Turbo__Tim]

MJRWOOD, the maf numbers can be decieving. Did you by any chance enrich by 4%, and then go to 22psi? I have seen 170 at base settings, at high boost (22) but didn't have enrichment going on at the time.

It's cool you are looking at MAF numbers. I believe it's one of the ways to guage the potential for power. The trans+ may manipulate the numbers to get more gas into the engine.

Try dropping it down to a safe boost level, and then manipulate the wot fueling, keeping the boost the same. you will see what I'm talking about..

I'll 'baseline' my settings, and just for comparison's sake, I'll see what my maf readings are at 17 psi. Prolly be around 150...I'll post later tonight...

 

[BEATAV8]

Quote:
"MJRWOOD, the maf numbers can be decieving. Did you by any chance enrich by 4%, and then go to 22psi? I have seen 170 at base settings, at high boost (22) but didn't have enrichment going on at the time. "

Yup that's what I did. With that 4% rich setting, the MAF translator is reporting some extra air that's not really there. Definitely a good point!

Ideally I need to get the fueling where I want it with the base MAF setting, like you said!

Pay no attention to Red Canyonero....
He obviously needs more work to do!

 

[BEATAV8]

Just checked one of my DS files from when I was running 18 PSI with base MAF settings (bottons set to 3,0,0,0). MAF numbers were in 160's and O2's were 770's.

Hmmmmm.......

Time to go back and increase the fuel pressure a tad bit.

 

[Turbo__Tim]

Ok found some dry road and for comparisons sake, I did hit maf no.'s of 148 at 17 psi. base setting. I then enriched by 4%, and got 160 mafs at the same boost levels. upped the boost to 18 psi, and saw 165 maf's. Not a lot of change, but there is a pattern..

 

[BEATAV8]

Thanks Turbo Tim! That's some good info. Looks like the +4% setting changed airflow reading by about +8% on that run. I wonder how much run-to-run variability is factoring in there? (ie does +4% really mean just +4%?? or is it more?)

I couldn't get any data last night, car was full of "wife and kids".....

I'm still mulling over whether or not I really want to use the base MAF setting. My BLM's are all real close to 128 with the 45 PSI fuel pressure I have now, and My O2's are real flat using the +4% setting where as with the base setting they were dropping off a tad on the big end (ie 800's --> 770's). Did you notice anything similar??

tim87tr....
Regarding your timing question: I think what you have written is probably correct. I'm not really sure how it works, but I'm guessing the translator probably reads frequency of the EST signal and determines engine speed. Whenever it sees 3000+ RPM it will pull the requested timing out. Does anybody know for sure how it works?? (I'm guessing Turbo Bob knows! )

 

[tim87tr]

New 100 octane Xylene Tune

Just added 5 gal Xylene and some MMO along with a full tank of 93 for a 100 octane brew. I am just starting to tune, but here is what I have so far. I am tuning for the track on June 28. My MM BstC maxed at 22 psi in 3rd on a 3rd gear run, so I don't know if I will try to tighten the wg since first gear is probably 23,24 psi on a stock turbo.

All my testing today within a 40 mile round trip were mostly 3rd gear runs, but it did not show any knock in low gears either at WOT. I had no knock until 22 psi in 3rd. I gradually increased timing in all gears. The fuel remained the same from the 96 tune in my orignal post, at 42 lb static and +6% at WOT for about 44.5psi over 3000 rpm.

Final 100 Xylene tune for today was:
Base timing 25*/23* and WOT 23*/21* at 22 psi 3rd
with 812 O2 @ 63 mph and 0.7 kr @ 73 mph.
Trans + users dial 4,3,3,F (100 tune)
or 4,3,2,E on the 96 tune

With the 100 mix, instead of the 96, I was able to run 2* more timing Base and 4* more at WOT, and about 3 psi more Boost. Not sure if that was worth the cost of 5 gallon Xylene in a tank instead of 2 gallon . But that is what will be in the tank for the dragstrip next Friday. I may be able to lean out some fp at the track with the O2's I have staying just at or slightly above 800 mv.

For the previous posts on the MAF numbers, I did check mine and noticed a max of 179 in the top of 2nd.

Any Trans + users, Xylene users, or both, please post comments or your results. Also someone recommend an EGT probe and digital gauge, I need one soon and my research on other EGT posts is confusing! I wish I had one for the track in a week. Thanks