Hmm... I feel my arm being twisted to go with meth. lol

I might bite the bullet in the not too distant future. Just need to get some other things sorted out first.

 

That or man up to some 80# injectors and buy your fuel from one of these gas stations.

http://e85vehicles.com/e85-texas.htm

 

Man I'd love to but that just seems like a hassle for a daily driver. One of those stations is only 7mi from my house, but I'm not ready to put my car on a leash like that.

Meth is more practical for me, and I have a source that'll sell it to me for 10% off.

 

man got alot of fed back on your dyno steve. now we got to get you a better tune.

 

eb hit some good points on it. {good to see people still pay attention sometimes}

the reason i say you need to work on the tune is simple.

i am sitting at 11.3-11.5 afr and 14.5 degree's of timing on a 2.9 and no meth. it's sitting at 303whp. winter tune. it sucks comparitivly speaking to what it was. the key is the timing map itself. you can flat line it and gain torque, but lose hp. or you can do a sharp roll into timing and gain hp, but also lose torque. if you mix them right in that table, you get the best of both worlds and a very broad power band.

the nosing over at 6800 is all in the timing table. the tvs will make peak power above 7300rpms. you can spin it to 7400 if you have under 40k miles on the stock springs and still retain valve control. above this on both numbers becomes a gamble if you lose valve control or not.

if your afr is 11.5 on the dyno, what is it on the street? difference in load, and airflow make a difference in a big way.

 

so its best to street tune?

 

use the dyno to work the timing table to find the best overall power. keep the afr the same as you would on the street.

 

Yeah. Tune it like you're planning on using it. The best way to simulate doing a run on the street is to... do it on the street.

*Legal fine print: "I'm not endorsing that you do it on the street."

 

yeh my tuner said to stay of the dyno to tune. best to do street tuning. but 3rd gear wot pulls on the streets ugh has to be late at night for no cops

 

Yeah, therein lies the problem with street tuning... a street to do it on.

 

yep lol gotta pay to play tho

 

Remember back in the prehistoric area (pre E85, ie dino fuel) I PM'd you and ask "What Octane level would you estimate your fuel and meth injection mixture at?"

You were probably like "WTF is he talking about!"

Well I was trying to get an idea of the Octane you were using to get the numbers you were putting down at the time. Before ZZP did all their E85 stuff I started researching E85 applications on other platforms. The huge buzz word was octane.

E85 = 105-110 octane. 93 octane + a high concentration of Meth injection is probably between 100-105 octane. So I figured out that E85 should provide similar or better results then meth injection.

And anyone who has tuned with 91 vs 93 octane knows how much of a difference 2 octane points make.

For a daily driver street tune I use a method called "Max Torque Timing".

In laments terms...you should be running your max timing at or just before your engine makes peak TQ. So if the max timing your setup can hold before KR is 24 degrees then your High Octane Timing table should ramp to 24 degrees of timing at or just before 4500 rpms(approximately). Then ride those 24 degrees all the way to redline.

IMHO, it creates the smoothest HP and TQ curves.



There are other methods that produce more peak HP but sacrifice TQ. And vise versa.

The dyno graph I posted is the difference between a 2.8" and 2.7" pulley with my setup on the M62 in-case anyone was wondering.

 

Very interesting stuff guys. Much appreciated. I can't wait to put some of this theory into practice.

 

Wow, this is getting very interesting.

 

As EB and Area have said timing is the name of the game, especially with a TVS. I wouldnt know first hand on a TVS, but I will follow Eb and say "My E85 M62 Redline will beat your TVS gas car!!!" :P

Going to meth for me was a nice increase in power over just premium fuel and going from meth to E85 seemed to have even far greater benefits. I talked with Ebristol a bit and took his advice on the best way to tune my timing table and I have a very broad powerband now. It pulls nicely for an M62, so imagine how exagerated the benefit margins would be on a TVS!

 

Not bad at all bud.

Get some meth and you'll wake her up.

Over 300 can be and has been had with that pulley. Shoot for it.

 

I learned most of what I know from Josh @ OTTP, Omega_5, Area47. The information is in the threads on this forum. You just need to pay attention and listen to the details. Keeping an open mind is also very important.

I took my TVS off for the winter so I am back on the M62. The blends of E85 change with regions/seasons so the E85 coming out of the pumps right now is actually E70 right now.

May 16th the true E85 blend will return to the pump. My car will be on the dyno before April to shoot for 300whp on the M62.

 

I wanna see you break 300 on the M62 Eb! You gonna be on a 2.6 this time around?

OP if I were you I think meth would be my next investment

 

op ima b in ur h town fri night. say during the day if u wanna look at the tune and ish

 

Nice numbers with the 2.7 pulley. I like seeing people squeeze out the full potential of the M62 before resorting to the TVS. I can't wait till you break 300whp with the M62

 

I might have one on hand just incase... I hope I don't need it.

lol

Well I resorted to the TVS already!

I got the TVS and put up **** poor numbers on prehistoric fuel.

I did my E85 testing on the M62 and put down the numbers in the graphs.

Then I bolted the TVS back on and put down the numbers in my sig.

It was a good learning experience.

Once winter rolled in I put the M62 back on.

When I had the M62 on last year I really did not push it that hard. I could run 25 degrees of timing with no KR on a 2.7" pulley. I was pretty happy with that. So I took it to the dyno to see what it could do. Honestly, I was very surprised with those numbers! I was excited to get the TVS back on to see what it could do.

I maxed out my 80#s with the TVS on a 2.9" pulley. So now I need some fuel upgrades.

It was not until after all my TVS fun I realized how close I was to 300whp on the M62. I am not an expert tuner by any means but I know there are some ways to pick up some more ponies over the 285/265 I put down in the past.

So I am going to replace the coupler in the M62. (Its sort of rattly) Slightly port the outlet. (like Steigs does) Polish the inlet of the blower and change some things around in my tune. I guess we will see what happens...

 

Are their actually dyno proven results from porting and polishing the m62. I read somewhere that Eaton was seriously telling people not to do this becuase its but maximizing output as it is.

 

Yeah. I am not going to get crazy with the port. Probably something like this.

 

That's the TVS you are thinking of .... The M62 on the other hand, can be ported to an extent

 

Nope if you do a simple search online you will find a million and a half places saying that you should NOT port or polish the m62.

I'll ask that agian are there any DYNO proven gains from porting or polishing the m62.