Finally dyno tuned the ITR!
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From: CT
Finally dyno tuned the ITR!
Well after I built my itr motor in the spring, I have been driving it around on a decent street tune that I did, and it felt decent enough. But today I had full access to a friends dyno for 5 or 6 hours so I was able to fine tune it for power. With the help of a more experienced tuner, we were able to pull 193-194 WHP and about 130 lbs/ft. This was done on a newer model dynojet that supposedly reads a few percent lower then other local dynos. Also there is deffinitely more left in the car, but I left the timing maps very conservative so I could run pump gas and for technical reasons I wasn't able to raise vtec above 6000. Overall i"m pretty happy considering this was the first motor i ever built myself and all the limitations we encountered. We made about 30 passes and we didn't finish till 7:30 so I forgot the sheets, but I will post them when I go to the shop this week.
I know I know, the thread is worthless without pics, so heres a pic of the car for reference. Oh I also took a couple videos, but I have to email them to myself.
I know I know, the thread is worthless without pics, so heres a pic of the car for reference. Oh I also took a couple videos, but I have to email them to myself.
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From: CT
Re: (black cx)
o sorry forgot that too!! Real quick:
stock 81mm bore b18c5
CTR pistons so compression is around 12.6-12.7 (I would not suggest this setup to people unless its an uber budget build like mine)
itr rods
b16 head
RM springs/retainers
skunk2 pro 1 cams
toda gears (messed around with them just a bit)
Dented toda header (crappy cat and apexi n1 exhaust)
obd1 step down harness to chipped p28
440cc injectors
Tried both AEM ITR cold air intake and a J's racing whale ***** (both were about the same with the slight advantage going to the AEM.
I was tunning using Crome pro, till my laptop took a ****, then we used the VAFC.
I was shooting for 200whp, so I'm pretty much there considering the dyno reads a little low. With more timing/tunning time and better exhaust, I hope to break 200whp on their dyno. As it is the car rips now, I gained a lot of midrange just fine tuning and adjusting cam gears a hair.
stock 81mm bore b18c5
CTR pistons so compression is around 12.6-12.7 (I would not suggest this setup to people unless its an uber budget build like mine)
itr rods
b16 head
RM springs/retainers
skunk2 pro 1 cams
toda gears (messed around with them just a bit)
Dented toda header (crappy cat and apexi n1 exhaust)
obd1 step down harness to chipped p28
440cc injectors
Tried both AEM ITR cold air intake and a J's racing whale ***** (both were about the same with the slight advantage going to the AEM.
I was tunning using Crome pro, till my laptop took a ****, then we used the VAFC.
I was shooting for 200whp, so I'm pretty much there considering the dyno reads a little low. With more timing/tunning time and better exhaust, I hope to break 200whp on their dyno. As it is the car rips now, I gained a lot of midrange just fine tuning and adjusting cam gears a hair.
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Re: Finally dyno tuned the ITR! (bitzbp)
What did you use to tune the car ?
What correction type were you using with winpep? Sae or Std etc ?
How much avg timing was being ran ?
I.e. 26 deg at 8000 rpms at 0 inches of vac etc..
What kind of cam timing settings did you end up with ?
The car looks great
What correction type were you using with winpep? Sae or Std etc ?
How much avg timing was being ran ?
I.e. 26 deg at 8000 rpms at 0 inches of vac etc..
What kind of cam timing settings did you end up with ?
The car looks great
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From: CT
Re: Finally dyno tuned the ITR! (mtber)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber »</TD></TR><TR><TD CLASS="quote">What did you use to tune the car ?
What correction type were you using with winpep? Sae or Std etc ?
How much avg timing was being ran ?
I.e. 26 deg at 8000 rpms at 0 inches of vac etc..
What kind of cam timing settings did you end up with ?
The car looks great </TD></TR></TABLE>
I street tuned the car with Crome pro, and we started tuning on the dyno using crome, but my laptop craped out and we ended up going back to just using a VAFC
timing is at about 23 degrees at WOT at higher rpm, but when using a VAFC it actually changes the timing based on injector pulse width so I'm not exactly positive where total timing stands. I am finally convinced though that I need AEM or some other 3D engine management to be completely happy with the car.
What correction type were you using with winpep? Sae or Std etc ?
How much avg timing was being ran ?
I.e. 26 deg at 8000 rpms at 0 inches of vac etc..
What kind of cam timing settings did you end up with ?
The car looks great
</TD></TR></TABLE>I street tuned the car with Crome pro, and we started tuning on the dyno using crome, but my laptop craped out and we ended up going back to just using a VAFC
timing is at about 23 degrees at WOT at higher rpm, but when using a VAFC it actually changes the timing based on injector pulse width so I'm not exactly positive where total timing stands. I am finally convinced though that I need AEM or some other 3D engine management to be completely happy with the car.
Re: Finally dyno tuned the ITR! (bitzbp)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bitzbp »</TD></TR><TR><TD CLASS="quote">I street tuned the car with Crome pro, and we started tuning on the dyno using crome, but my laptop craped out and we ended up going back to just using a VAFC
timing is at about 23 degrees at WOT at higher rpm, but when using a VAFC it actually changes the timing based on injector pulse width so I'm not exactly positive where total timing stands. I am finally convinced though that I need AEM or some other 3D engine management to be completely happy with the car.</TD></TR></TABLE>
I would give crome pro a 2nd shot. AEM is overkill for your application.
Good luck with everything
timing is at about 23 degrees at WOT at higher rpm, but when using a VAFC it actually changes the timing based on injector pulse width so I'm not exactly positive where total timing stands. I am finally convinced though that I need AEM or some other 3D engine management to be completely happy with the car.</TD></TR></TABLE>
I would give crome pro a 2nd shot. AEM is overkill for your application.
Good luck with everything
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From: CT
Re: Finally dyno tuned the ITR! (mtber)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber »</TD></TR><TR><TD CLASS="quote">
I would give crome pro a 2nd shot. AEM is overkill for your application.
Good luck with everything </TD></TR></TABLE>
I have tuned a number of modified cars using Crome and I like it a lot, but there have been 2 instances where I needed better control, one was this car, and the other was an ITB big cammed car.
Here is an example of an issue I had tuning my car that always annoyed me. When I fine tuned the AFR's on the street, I was very pleased with it, then I would turn on my headlights and foglights and radio and drive around on the street, only to watch my AFR's become very inaccurate, causing the car to run/idle differently. I could never figure out what exactly was happening until the tuner showed me the resistance change at the injectors that occurs because of the current draw. The issue stems from the fact that the injector driver is built into the stock ecu, and will fluctuate based on what on in the car. It becomes extremely noticeable these relatively big cams in my small motor at idle. If we tune the car to idle perfect with everything off, then when I turn everything on my idle goes to ****. Right now we have done a pretty good job of evening out the difference between everything on and everything off, and even driving the AFR's arent fluctuating as much but the AEM has an issolated injector driver that won't let the injectors be affected by the current being used. As a side note, for my own curiosity, I am going to try using different injectors and a prelude resistor pack. The tuner said that this issue occurs more in high impedance injectors, so I am curious to see what happens using low impedance injectors and the resistor pack. I also am curious to see if a product like a voltage stabilizer would have any affect on it.
In any case I love Crome and I thought I would never be buying AEM because it is so expensive, but seeing as I may start working on tuning more extreme setups, I want to learn other software and try them out for myself to see how difficult/simple they are and how effective they are.
Wow I didn't intend to write so much, and I am always trying to learn more so if anyone takes the time to read this only thing and wants to flame/enlighten/respond I appreciate any comments.
I would give crome pro a 2nd shot. AEM is overkill for your application.
Good luck with everything
</TD></TR></TABLE>I have tuned a number of modified cars using Crome and I like it a lot, but there have been 2 instances where I needed better control, one was this car, and the other was an ITB big cammed car.
Here is an example of an issue I had tuning my car that always annoyed me. When I fine tuned the AFR's on the street, I was very pleased with it, then I would turn on my headlights and foglights and radio and drive around on the street, only to watch my AFR's become very inaccurate, causing the car to run/idle differently. I could never figure out what exactly was happening until the tuner showed me the resistance change at the injectors that occurs because of the current draw. The issue stems from the fact that the injector driver is built into the stock ecu, and will fluctuate based on what on in the car. It becomes extremely noticeable these relatively big cams in my small motor at idle. If we tune the car to idle perfect with everything off, then when I turn everything on my idle goes to ****. Right now we have done a pretty good job of evening out the difference between everything on and everything off, and even driving the AFR's arent fluctuating as much but the AEM has an issolated injector driver that won't let the injectors be affected by the current being used. As a side note, for my own curiosity, I am going to try using different injectors and a prelude resistor pack. The tuner said that this issue occurs more in high impedance injectors, so I am curious to see what happens using low impedance injectors and the resistor pack. I also am curious to see if a product like a voltage stabilizer would have any affect on it.
In any case I love Crome and I thought I would never be buying AEM because it is so expensive, but seeing as I may start working on tuning more extreme setups, I want to learn other software and try them out for myself to see how difficult/simple they are and how effective they are.
Wow I didn't intend to write so much, and I am always trying to learn more so if anyone takes the time to read this only thing and wants to flame/enlighten/respond I appreciate any comments.
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From: NYC bitchessss
Re: Finally dyno tuned the ITR! (bitzbp)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bitzbp »</TD></TR><TR><TD CLASS="quote"> The issue stems from the fact that the injector driver is built into the stock ecu, and will fluctuate based on what on in the car. </TD></TR></TABLE>
whould this happen if a resistor box was used too, or is this only unsaturated injector applicatons?
whould this happen if a resistor box was used too, or is this only unsaturated injector applicatons?
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From: CT
Re: Finally dyno tuned the ITR! (m R g S r)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r »</TD></TR><TR><TD CLASS="quote">
whould this happen if a resistor box was used too, or is this only unsaturated injector applicatons? </TD></TR></TABLE>
Thats what I was wondering, and the tuner I was talking to already told me that the problem isn't as bad on low impedance injectors, so I assume using those with a resistor pack would help. I may try it if i can get my hands on a set of injectors, because I have a resistor pack around somewhere.
whould this happen if a resistor box was used too, or is this only unsaturated injector applicatons? </TD></TR></TABLE>
Thats what I was wondering, and the tuner I was talking to already told me that the problem isn't as bad on low impedance injectors, so I assume using those with a resistor pack would help. I may try it if i can get my hands on a set of injectors, because I have a resistor pack around somewhere.
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From: CT
Re: Finally dyno tuned the ITR! (ekay_jeremy)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ekay_jeremy »</TD></TR><TR><TD CLASS="quote">what happened to your itr head?</TD></TR></TABLE>
I still have my original ITR motor, this is a different motor I built for the car. I just peiced this one together cheap to gain experience, I have since built a few other motors, but this one was my first attmept and after about 10K miles its still got 275+ compression across the board.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sikciv666 »</TD></TR><TR><TD CLASS="quote">my man, let me get those wheels!!
hey new shop in stratford...EPL..dyno and the whole niner!!!</TD></TR></TABLE>
Give me some $$ and I'll do another set of wheels just like em
I still have my original ITR motor, this is a different motor I built for the car. I just peiced this one together cheap to gain experience, I have since built a few other motors, but this one was my first attmept and after about 10K miles its still got 275+ compression across the board.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sikciv666 »</TD></TR><TR><TD CLASS="quote">my man, let me get those wheels!!
hey new shop in stratford...EPL..dyno and the whole niner!!!</TD></TR></TABLE>
Give me some $$ and I'll do another set of wheels just like em
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