Originally Posted by Eric

is this better? and i got up to 155 this run also

Attachment 19427

Originally Posted by 32krazy!

if im reading this correctly you managed a 13.3 afr which is great at wot (97% tps) with 30 psi boost!! rpm is still wacky reading 30k and 80% duty cycle for injectors? might be getting to the end of the injectors do you think? have you delimited?

btw nobody has better apple pie than me!!
if your running the zeitronix they have a website 13dog showed me and downloaded their program and now i can read and send all the files from my laptop

Originally Posted by NeedsWings

i just sent ya a few emails, long story short is that we are doing much much better!

the bottom line on the graph is the actual fuel pressure in psi, not injector duty cycle (which is the % of time the injector is open). as far as i know that is from a stock calibration in the pcm so it will be running the stock injector duty cycle, just more fuel being sprayed thru the injector due to the higher pressure

so the stock injectors are capable of flowing enough fuel thru rd gear withthe base pressure you have, if you plan on doing more 4th and 5th gear pulls we will turn up the pressure a bit

Originally Posted by bmorgan

Not sure what those crazy spikes are in your RPMs, but that is some serious boost my friend. I bet it feels like it just keeps getting stronger the longer you pull. I would love to see what kind of times you can turn in the 1/4.

Originally Posted by 32krazy!

if im reading this correctly you managed a 13.3 afr which is great at wot (97% tps) with 30 psi boost!! rpm is still wacky reading 30k and 80% duty cycle for injectors? might be getting to the end of the injectors do you think? have you delimited?

btw nobody has better apple pie than me!!
if your running the zeitronix they have a website 13dog showed me and downloaded their program and now i can read and send all the files from my laptop

Originally Posted by daithi2

im not telling anyone how to drive thier car, but i'd be carful making extended runs at wot and in the 13's for afr.

Originally Posted by dinasrt

I got the following from a post by tri_zombie. This is a srt6 he is talking about of course, and don't know if this helps you or not. It's more than what I would know how to do for sure. "2) Fuel injectors cleaned, balanced and calibrated and matched up (interestingly enough my flow rates were 17% off between all the injectors) flowing 20% more plus a better pattern. cost about 150.00 each send out at least 12 so they can get the best match then sell the others off on ebay or add them to the intake ports (just after the supercharger) as a secondary set and control them with a mini piggy back for additional fuel (MD SRT6).
3) additional (second) fuel pump running 5-bar pressure @ WOT Waldig gave me the idea."

Originally Posted by Eric

sounds like the cost on all that would be alot... found Hi-Flow Fuel Injectors that TVT are selling.. might be more cost efficient

TVT Design, Crossfire/Mercedes/Genesis Performance Parts - SRT6/C32/SLK32

Originally Posted by Eric

what afr's would you like to see.. *just wondering* i apprecate all comments and suggestions

Originally Posted by billvp

I'm not sure where the $150 came from, but it most definitely is NOT $150 apiece to flow balance injectors. He might have meant a total of $150 to clean and test all 12 if you wanted to do that (which defintely seems like a good idea).

Originally Posted by daithi2

13's lean under boost, 12.2's safer, 11.9's happy, 11.4's getting too fat. I tune my turbo cars for the 11.8-12.2 range, and never go over 12.8.

Originally Posted by Eric

yea that sounds a lil better lol.. 150 each is nuts

Originally Posted by tri_zombie

Yes it was around $150. EACH, just cleaning and testing is more like $25.00 each. Pricey… you decide!

If you look around you will see that having injectors Calibrated, Flow benched, injector spray patterns Strobe light tested and adjusted, oscilloscope analysis of how the injector reacts to driver signals over a wider range of pulse widths, usually from .5 milliseconds to continuous flow, testing injectors at pressures up to 125 psi. Also testing injectors at voltages between 7 and 14 volts (real world).
Having the injectors calibrated at the pulse width necessary for wide-open-throttle, maximum rpm operation and testing the injectors at a wide range of pulse widths and fuel pressures, $150. Is actually low to average price.

For me it’s assurance that I’m not going to run lean or worse dump fuel into a cylinder and trash a piston at 6700 rpms. (at least as far as the injectors go) Also the idle is so smooooth!!!

You can grab 6 injectors off the shelf and I doubt you will find two closer than 5%, Don’t believe me ask TVT for calibrated test sheets for each injector and see what they tell you. BTW I see TVT charges $599. for their injectors?

I have a set of 440cc “Green Giant” Bosch injectors I purchased for my VW 1.8t three years ago that were brand new (off the shelf) and after a few runs and reading the plugs found 1 running lean and 2 running rich, after sending them for blue printing they came back optimized with an increased the flow rate of 40% and exactly the same, I don’t remember how far off they were but for a 4 cylinder I remember it being allot.

But call me a chicken I don’t leave anything to chance and unless you can get AFR readings on each cylinder your really just guessing!

Originally Posted by ImportLabSRT

What spark plugs and wires are you running?

Originally Posted by tri_zombie

Yes it was around $150. EACH, just cleaning and testing is more like $25.00 each. Pricey… you decide!

If you look around you will see that having injectors Calibrated, Flow benched, injector spray patterns Strobe light tested and adjusted, oscilloscope analysis of how the injector reacts to driver signals over a wider range of pulse widths, usually from .5 milliseconds to continuous flow, testing injectors at pressures up to 125 psi. Also testing injectors at voltages between 7 and 14 volts (real world).
Having the injectors calibrated at the pulse width necessary for wide-open-throttle, maximum rpm operation and testing the injectors at a wide range of pulse widths and fuel pressures, $150. Is actually low to average price.

For me it’s assurance that I’m not going to run lean or worse dump fuel into a cylinder and trash a piston at 6700 rpms. (at least as far as the injectors go) Also the idle is so smooooth!!!

You can grab 6 injectors off the shelf and I doubt you will find two closer than 5%, Don’t believe me ask TVT for calibrated test sheets for each injector and see what they tell you. BTW I see TVT charges $599. for their injectors?

I have a set of 440cc “Green Giant” Bosch injectors I purchased for my VW 1.8t three years ago that were brand new (off the shelf) and after a few runs and reading the plugs found 1 running lean and 2 running rich, after sending them for blue printing they came back optimized with an increased the flow rate of 40% and exactly the same, I don’t remember how far off they were but for a 4 cylinder I remember it being allot.

But call me a chicken I don’t leave anything to chance and unless you can get AFR readings on each cylinder your really just guessing!