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Tuning with the EBL
Hi all finally got around finishing the engine ready to drop it back in
to start i have 383 solid roller now .618 lift
Afr 227 heads cnc flow 318cfm at .650
hsr intake
the only changes i made from before are heads , cam and injectors 60lbs
previusly i had a hr cam 540 lift
and accel 30lbs injectors
on my previous tune i was at 95% duty cycle
so I decided to go to a bigger injectors since i have way more cam and heads
The questions i have now are what numbers do i put for the following
injectors correction offset?
single fire mode pw?
small pw correction?
well update #2 i left my previous numbers on the correction offset and single fire mode pw
as well as small pw correction
im maxing out my ve table and car still a bit lean
what do i need to change to make injectors deliver more fuel?
also this are napol performance injectors
they look like the deka/simmens 60#
they have the following number imprinted in them FL114961
any help?
You need to buy injectors that come with data. This is one of the biggest problems we run into with tuning - customer buying cheap injectors without any data. It makes the situation really difficult and you have to do a LOT of testing to get reasonably good numbers for the voltage offsets and short PW tables, etc.
My personal opinion is that buying injectors without data is like buying canned food without a can opener. Beyond stupid.
Yes I understand
what information should i asked for?
i have email the manufacturer and they told me they will get back with me
thanks for the response
But the quality and performance of those ebay knock-off injectors is often terrible. Great way to melt a piston. I recommend you throw them off the nearest cliff and get some Holley injectors that come with a data sheet in the package.
I have used a dozen sets of the "Napol" coil packs for an application we deal with often and I had to stop buying them. I've had about half a dozen stop working entirely. Chinese junk.
GD
Last edited by GeneralDisorder; Apr 20, 2020 at 11:38 AM.
Thanks again im throwing this chynahh junk out
i manage to borrow a set of accel 01D114B 40lb injectors from a friend
it should be enough for my 383 600hp engine
racetronix sells them as well but they say 37lb
i did a bit of research and they actually are 37lb
this is the following specs are in pic
my question is i know what to input in the offset correction table
but what about small pw correction and single fire mode pw?
It's the voltage vs time offset table in the graph. Not sure what the ELB table looks like, but often times with $8D in the 7730, the tested voltages on the injector datasheet don't line up with the voltages in the table within the calibration, so you have to linearly interpolate to get the voltage. Let's say the they tested at 13V and 14V, and your EBL table entry only has 13.3V. You have to linearly interpolate between the offsets at 13V and 14V to get the offset value at 13.3.
Also keep in mind that there could be a units issue... in $8D, the units of time are in micro-seconds. Whereas datasheets are often given in milliseconds. If the EBL is in micr-oseconds, simply divide the datasheet offset values by 1000 to get to micro-seconds.
For the low PW correction, typically on Bosch-III's you zero that out due to the fact they're more efficient than the old Multecs at low PW's.
thanks i interpolated everything
and i can tell the difference already
well the car was coming around i managed to do a few pulls was a bit fat
on third pull I cleaned fuel a bit and added bit more timing but trans let go on the 1-2 shift
thankfully i have another trans I ordered few weeks ago which should hold
its fully built sonnax everything
and a lower 2.84 first
Originally Posted by ULTM8Z
It's the voltage vs timeffset table in the graph. Not sure what the ELB table looks like, but often times with $8D in the 7730, the tested voltages on the injector datasheet don't line up with the voltages in the table within the calibration, so you have to linearly interpolate to get the voltage. Let's say the they tested at 13V and 14V, and your EBL table entry only has 13.3V. You have to linearly interpolate between the offsets at 13V and 14V to get the offset value at 13.3.
Also keep in mind that there could be a units issue... in $8D, the units of time are in micro-seconds. Whereas datasheets are often given in milliseconds. If the EBL is in micr-oseconds, simply divide the datasheet offset values by 1000 to get to micro-seconds.
For the low PW correction, typically on Bosch-III's you zero that out due to the fact they're more efficient than the old Multecs at low PW's.
Yeah I remember when I finally got injectors with test data behind them and then got the offsets into the calibration, I noticed the difference just when I first started up the car... it was such that I knew it was right before i even drove the car.
Btw... I mistakenly said to divide milliseconds to get to microseconds... it's the other way around. Multiply milliseconds by 1000 to get to microseconds.
