Got my SMC kit to work now...need feedback

[d0n_3d]

Well besides the 2nd nozzle goofup I did...the kit went in very well and I actually got to test it out today on just the one nozzle. Here are my results:

pump speed was half at around 6
spray on point was also around half and it kicks in early at around 11 lbs of boost
fuel pressure is 42 line on...max boost at 20 lbs

from a dig i got just a tad bit of knock but i think it was false shift knock...after the 1-2 shift i didn't see any knock at all...boost was 18-19 lbs WOT

from a roll at 55 mph i went WOT and got no knock whatsoever...alky spraying again at 11 lbs of boost and i got up way past 85 mph in a heartbeat with max boost nearing 20 lbs...

so i definitely have room to turn up the wick...should i turn up the boost a few more lbs? should i turn up the spray on point up to 13 to 15 lbs? normally on 93 gas i knock at 14 lbs so i will set it at 13...

didn't use too much alky either...only used 1/4 tank and i did about 6-7 passes on the highway with it...all i gotta say is i am glad i am an alcoholic

 

[Turbo__Tim]

Sounds like you are well on your way!

13 psi seems right, just get out of it if you hear or see knock. First gear is usally pretty safe..

I know no matter what I say, you will try to push it past 22 psi.

You are running straight denatured?

No matter what, I wouldn't go below one-half pump speed. Stay with the denatured if it is working this well. Let the engine cool a bit between runs, take your time and enjoy the tuning process.

 

[d0n_3d]

yes i am running straight denatured...my car loves this stuff!

this is only on one nozzle mind you...steve is sending me another nozzle since i broke the other one...so i will have to retune with two nozzles soon...i want to get the boost up to 25 lbs if possible spraying the alky...i have a fairly low timing chip in 22-23 degrees made from jim testa...and with the dual nozzles i should be able to see 25 lbs on a factory motor here...

i will set the alky to spray at 13 lbs of boost (then i can just leave it there and not have to worry about that setting)

 

[MEAN LT1]

Im glad your kit is working so well. I just put mineon a couple days ago and cant wait to tune with it. I ahve the dual nozzle kit with the trunk mount 1-gallon bottle. Although our applications are a little different it should work the same

 

[Kevin Turch]

I run 24lbs on my single nozzle. 100% denatured, and a Jay C, alchy chip. Not sure of the timing in it tho.

 

[blackbuick87]

What chip are you running Don? Do you know the timing?

Only change one thing at a time. I would leave the t/o point alone for now and add a little boost, and play with the pump speed and wastegate rod until your pump speed is almost maxed out.

You probably have room to move up the t/o point a pound or two but play it safe for now and get the top end dialed in.

How do you like the TE44 now

 

[scottyb]

Since you have plenty of pump speed left and no knock, I'd stick to the single nozzle for a while. Keep bumping the boost and then the pump if you tickle the knock. I think that the spray is better with higher pump speeds, too.

I disconnected my second nozzle as I was convinced I was drowning it at 1/2 pump speed and 21 lbs. I still have my pump speed at 5, 21 lbs of boost with no knock on a single and O2's are back in line. Perhaps when I get bigger turbo etc etc and I am pumping more air, I'll hook it back up. .02

 

[d0n_3d]

when the car starts surging at high rpm doesn't that mean i am spraying too much alcohol? because say i punch it from a stop...my spray on point is at 13 lbs of boost and pump speed at 8 with both nozzles hooked up...once i climb up to 80 mph or so and high rpms the boost starts to stutter like crazy and goes back down and goes up again and down...car hesitates and then i let off the gas...

now i went to the track this past weekend and found out i was totally pegging the MAF sensor readings at 254 GPS at only 20 lbs of boost which caused my sputter problem again and i couldn't go any faster than 80 mph and finished at 14.8 @ 80 mph...letting off the throttle right at the end...for about 7 frames my GPS was pegged at 254...o2's were in the 930's (yes extremely too rich i know)

but i get the sputter problem even at lower 800 o2's...is this maf dropout related because i am running a custom burned jim testa alky chip with 23 degrees timing...now i just ordered the extender chip from ramchargers and hopefully this solves my maf dropout problem (if that what this really is)

 

[salvageV6]

Sounds more like a wastegate control problem and not an alky. problem to me.

I had the same problem at the track when I put on my TA62 turbo.

At higher boost it surged.

I lowered the alky. delivery and it didn't cure it.

Just something else for you to check. Puck alignment and the wastegate actuator system and all....

 

[d0n_3d]

so really i just ordered the extender chip for nothing? some other guy told me he had the same exact problem as me and said it was maf dropout due to him pegging the meter at 254 GPS because that's what I am doing...

my wastegate is 1 year old and so is the solenoid and boost lines...my puck on the 90 degree elbow seals the hole on the te-44 very well

 

[salvageV6]

You thought it was because of the alky. I am doubting it unless you are spraying a ton in there at higher boost.

I don't know about your MAF problem it very well could be that.

I was replying to your alky. questions.

I have the ME chip and the dropouts are taken care of so my surging wasn't those either.

Good luck and you can't go wrong with the Extender setup.

 

[fast eddie]

Try lowering your fuel presure just a tad,that helped my surging at top end

 

[cjp69]

Were are your spark plugs gapped? I friend and I had the same problem with it cutting out and surging at high boost (20+) with Alky, and changed the gap from a tight .035 to a tight .032 and he said that solved his problems.

Also, I think he is running AC Delco 42's.

Chris

 

[d0n_3d]

i am running ac delco cr42ts plugs gapped at a tight .035"

i guess i will try a tighter gap...i will try the .032" and see what happens...

 

[cjp69]

Let me know if it makes a difference!

Chris

 

[d0n_3d]

guys i think i found the problem...

i pulled all the plugs out...most of them look a bit orangish/yellowish right where the tip is around the white part...i guess that means detonation

but what i found very interesting was plug number 2 on the passenger side...something happened to the gap and it was angled down so much that it was touching the electrode, basically running a closed gap! i bet that's what the problem was...or it's either that or the problem CAUSED that plug to do that...what do you think...i am putting new plugs in gapped at a very tight .32 and let's see what happens here...

also i found out that on my translator box...setting number 3 in the little tiny switches was turned ON (which is limiter) so i switched it OFF to NO limiter...i bet this problem gets fixed now and then i can send back the extender chip i bought (hopefully) because i don't need it...

 

[blackbuick87]

Every single person in this forum is pegging their MAF. If not there is something wrong with your engine

You can go as low as .030 on the plug gaps, I wouldnt go below that or you may have driveability problems.

Get the boost up more to 22-25 lbs, you have not even reached the sweet spot of your turbo yet

 

[d0n_3d]

Originally posted by blackbuick87
Every single person in this forum is pegging their MAF. If not there is something wrong with your engine

You can go as low as .030 on the plug gaps, I wouldnt go below that or you may have driveability problems.

Get the boost up more to 22-25 lbs, you have not even reached the sweet spot of your turbo yet

but i was told that the computer will shut down fuel delivery once you hit the 254 GPS limit on a stock setup...that's what i thought my car was doing...are you saying that i don't need the extender chip and the car should go faster even if i do peg the GPS limit?

i went for a couple test runs again today and i found out something interesting...

from a dead stop in OD i didn't experience any hiccups or boost surge...the transmission shifted into 4th gear very hard at around 100 mph though which i don't like because i heard 4th gear is very weak in our cars...

when i went from a dead stop in D i got up to 5200 rpms in 3rd gear going about 85-90 mph and then the car started hiccuping and boost surging like crazy like the car didn't want to go any faster...is this because i have hit the RPM limit and need to shift into OD???

btw this was the alcohol spraying at 13 lbs and boost up to 22 lbs every time WOT...pump speed was on 3 (yes 3) and no knock at all whatsoever...i started at pump speed of 8 and worked my way all the way down to 3 and still didn't get knock...fresh plugs this time gapped at .032"

 

[scottyb]

Originally posted by d0n_3d

btw this was the alcohol spraying at 13 lbs and boost up to 22 lbs every time WOT...pump speed was on 3 (yes 3) and no knock at all whatsoever...i started at pump speed of 8 and worked my way all the way down to 3 and still didn't get knock...fresh plugs this time gapped at .032"

1 nozzle or 2?

 

[blackbuick87]

Originally posted by d0n_3d
but i was told that the computer will shut down fuel delivery once you hit the 254 GPS limit on a stock setup...that's what i thought my car was doing...are you saying that i don't need the extender chip and the car should go faster even if i do peg the GPS limit?


when i went from a dead stop in D i got up to 5200 rpms in 3rd gear going about 85-90 mph and then the car started hiccuping and boost surging like crazy like the car didn't want to go any faster...is this because i have hit the RPM limit and need to shift into OD???

No, you were told bad info. Once the MAF is pegged at 255, it does not "shut down" fuel delivery, it "guesses" at fuel delivery from preset fuel tables in the chip. So it continues to add fuel, or every one of us would blow up. The advantage of the Extender is that it removes all of the guessing, and allows the chip to add fuel based on actual readings vs pre-made fuel maps.

Your studder at 5200 rpms sounds like valve float. It may be time for some comp cams 979's or 980's. My car shifts into OD at about 100 - 105 also, I only worry about that at the track. With 26" tires you are out of rpms by 110 anyways.