ECMlink Turned the boost UP.......e85 i love you

[SasaniFab]

5th filter spotless

 

[1990TSIAWDTALON]

Like @henrysan said, peak VE will pretty much show iteslf in a log if everything is pretty close to being dialed in. Here's a screenshot of a log from my car:

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There's a mathematical way to determine this, but for simpletons like myself, the log will get you close.

4 things you want to look at in the log:

1) Peak torque
2) Peak power
3) Peak VE
4) Where these values "intersect"

If you look at where my cursor is, the car is making peak power, torque, and VE at that point in the log. As a general rule for DSM guys, this typically occurs around 5,500 RPM (5,274 in my case). This should be pretty close where the car is at peak VE. Reference the peak VE value, and reference all the cells that are highlighted during that VE value. For example, my VE is 1.000, so I'll scroll through the log and target all the cells that get highlighted when VE is at 1.000 or over. In these cells, you're shooting for 100% VE.

Again, if your peak VE is over 100% in your SD table, you need to add fuel via global, if it's under 100%, you need to subtract fuel via global.

This is where how your table looks actually matters. A sexy VE table directly correlates to a smooth running car that makes good power. @19gsx91 can back up what I'm saying, as he's ridden in 1837

Edit: One important thing to note; if your tune is completely jacked, the method above will not work for you. As your values get more out of wack, you won't be able to rely on your logs to give you accurate information about how the motor is actually running. For example, your log isn't going to clearly show peak VE in a cut-and-dry format (like in my log) if your tune is all f***ed up. The car needs to be fairly close to being dialed in before you can use the method above.

You don't realize how much it means coming from someone I trust Brett! Thank you! I am going to follow along and try to get my global a bit closer since my highest VE value is 91, I think. Great advice and help! Thank you very much. As you probably read, I am just stubborn and hate to ask for help. I want to do my own tune, as much as possible, so that when asked, "I built it, I drive it and I tuned it". Appreciate your advice! When I get over being stubborn, I will talk to you about a few more things.

 

[1990TSIAWDTALON]

I don't think my clutch is happy....

Mine isn't real happy either!!!

 

[GST with PSI]

As you probably read, I am just stubborn and hate to ask for help.

FWIW, I learned everything I know about tuning by reading through various resources, and asking questions here. If you don't ask the question, we can't give you the answer.

I've also learned a lot through trial and error. Some of those lessons were harder than others...Which is why I don't mind sharing what I've learned with others.

 

[SasaniFab]

Thats how you learn....nothing wrong with needing help once in awhile. What I like about the forums is it gives you reassurance when you are unsure about jumping into something youve never done...

 

[Kapok6]

And here I am about to go back to 93...

 

[SasaniFab]

And here I am about to go back to 93...

? Why..93 is terrible..... I did however manage to run my last motor on like 24 degrees of ignition timing with some meth injection before disintegrating my headgasket . This was when I had no clue what the hell I was doing. I used to be a fan of meth injection, I'm not using it currently and will only use it to cool my intake charge in the summer. Depending on a pump to keep your engine from exploding terrifies me.....

 

[1990TSIAWDTALON]

FWIW, I learned everything I know about tuning by reading through various resources, and asking questions here. If you don't ask the question, we can't give you the answer.

I've also learned a lot through trial and error. Some of those lessons were harder than others...Which is why I don't mind sharing what I've learned with others.

I already know from all of your very helpful post's that you don't mind and that makes you a special person. When I get to the point that I'm scratchin my head and not happy, I will be asking because who wants to hate on their DSM??? Gotta be happy and have a smile on the face when you drive one. Thankfully, I am still smiling. I knew NOTHING about these monsters until about 4 years ago so I went from muscle cars to this platform and I am glad I got into them. I have learned all I know, or I'd say 90% about these, from this very forum and the great group of people that make it up. Thanks Brett for being encouraging!

 

[Kapok6]

? Why..93 is terrible..... I did however manage to run my last motor on like 24 degrees of ignition timing with some meth injection before disintegrating my headgasket . This was when I had no clue what the hell I was doing. I used to be a fan of meth injection, I'm not using it currently and will only use it to cool my intake charge in the summer. Depending on a pump to keep your engine from exploding terrifies me.....

E85 is inconsistent in its purity, harder to find, and doesn't register knock the same way 93 does. Curt told me on several occasions that he hates e85, and i'm starting to actually think more about his position. The guy made 650awhp with 93 and no meth. I can't do that as i'm not a DSM dsmigod like curt, but the fact that it can be done says a lot to me. Also, i'd be running a bigger framed turbo. BW S362SX-E in a divided 1.0 a/r housing. I'd think that should help...

 

[ceedawg]

E85 is inconsistent in its purity, harder to find, and doesn't register knock the same way 93 does. Curt told me on several occasions that he hates e85, and i'm starting to actually think more about his position. The guy made 650awhp with 93 and no meth. I can't do that as i'm not a DSM dsmigod like curt, but the fact that it can be done says a lot to me. Also, i'd be running a bigger framed turbo. BW S362SX-E in a divided 1.0 a/r housing. I'd think that should help...

Wow how on earth did Curt make that kind of power on 93! He's a BEAST!!

Me,I'm just going to depend on the Flex sensor. When I used Meth and had advanced timing, when the weather got warmer my car would knock full throttle. Never did that in any temp below 40degrees fall and winter. Temp over that knock knock knock. My turbo is BW 88/75 300sx (363). TS.91



E85 for me folks with the Flex sensor and ecm link for the inconsistencies stated with E85

 

[SasaniFab]

E85 is inconsistent in its purity, harder to find, and doesn't register knock the same way 93 does. Curt told me on several occasions that he hates e85, and i'm starting to actually think more about his position. The guy made 650awhp with 93 and no meth. I can't do that as i'm not a DSM dsmigod like curt, but the fact that it can be done says a lot to me. Also, i'd be running a bigger framed turbo. BW S362SX-E in a divided 1.0 a/r housing. I'd think that should help...

I think that is the only down side of e85, thankfully though we have flex fuel sensors. The first time I went to ny I purchase e70, the last time I went I'm seeing e80..... but again the fact he was able to make that much power is a testament to alcohols amazing properties. Do you have access to e85?

 

[Kapok6]

I think that is the only down side of e85, thankfully though we have flex fuel sensors. The first time I went to ny I purchase e70, the last time I went I'm seeing e80..... but again the fact he was able to make that much power is a testament to alcohols amazing properties. Do you have access to e85?

He made that power without alcohol. 93oct pump gas. No meth.

 

[gsxeclipse102]

His cylinder heads are also a work of magic. Takes far less boost to make power.

 

[SasaniFab]

He made that power without alcohol. 93oct pump gas. No meth.

He made 650 whp on a 4g63 on pump? Is this even possible? On a 2 liter?

 

[henrysan]

He made 650 whp on a 4g63 on pump? Is this even possible? On a 2 liter?

http://www.dsmtuners.com/threads/curt-brown-tpg-650awhp-on-pump-gas.332416/

 

[henrysan]

Possible, yes. Realistic for mere mortals, no.

 

[gsxeclipse102]

Curt brown is amazing. Hes the reason i got so much headwork done to my car. His ceramic wheel bearings are amazing too. Its about time someone caught onto what the honda guys been doing.

 

[SasaniFab]

Curt brown is amazing. Hes the reason i got so much headwork done to my car. His ceramic wheel bearings are amazing too. Its about time someone caught onto what the honda guys been doing.

took the car out, completely forgot about the backpressure/ boost pressure relation..... take a look guys, cars nuts

 

[SasaniFab]

Possible, yes. Realistic for mere mortals, no.

Here the pull boys .... got out of it https://vid.me/LU8p

 

[gsxeclipse102]

Video not working

 

[SasaniFab]

Video not working

Not long but it was that pull https://vid.me/3XtZ

 

[henrysan]

Here the pull boys .... got out of it https://vid.me/LU8p

To get some good data you really need to do a WOT pull in 3rd gear from 2.5-3k rpm up to about 8k, if you can do this while staying safe! Watch your wideband afr's, they are a good bit off of your requested DA values at WOT. You are moving some serious air and making power though!

 

[SasaniFab]

To get some good data you really need to do a WOT pull in 3rd gear from 2.5-3k rpm up to about 8k, if you can do this while staying safe! Watch your wideband afr's, they are a good bit off of your requested DA values at WOT. You are moving some serious air and making power though!

This wasnt planned as I installed my cutout and I overboosted......car pulled so hard. I have to be over 400whp, sure feels like it

 

[SasaniFab]

I think im slipping after 35 psi, act street disk not happy

 

[boostdawd]

Great stuff. I agree with henrysan. Do a full 3rd gear pull from 2.5 to 8k. Be safe!