Printable Version | Subscribe | Add to Favourites
New Topic New Poll New Reply
Author: Subject: ST170 Best VVT Map?

posted on 9/4/20 at 11:27 AM Reply With Quote
ST170 Best VVT Map?

Hello Guys,

i am currently building an ST170 powered Wesfield.

Now i am looking for the best VVT Maping for this engine.

Maybe some guys here have tried different maps?

I found at the Manufactor of my ECU the following Info:
0-1000 -> 0*
1000-2000 -> 50*
2000-3000 -> 40*
3000-4000 -> 50*
4000-5000 -> 30*
5000-5500 -> 20*
6000+ _> 10*

Is this the actually best way to go?
I could use a 3D Map. Does it make a big difference?

Maybe some expert here can say something to this.
The Problem is: As my understanding, my VE Table is wrong as soon as i change the VVT Table (Because with VVT Angle the Air Flow changes)

Hope some People here are fit at this topic

Stay healthy

View User's Profile View All Posts By User U2U Member

posted on 9/4/20 at 01:28 PM Reply With Quote
Simialr what I used: ME website had this taken from a factory st170
When my ME221 was supplied with a base map, and then "tuned" at ME it had a VVT map that simply gave more cam advance with revs, totally at odds with their info on the website. Bizarre. Changed the VVT map and much better. But do have a look at their ME100 maps for st170 too, they seem to use slightly different figures. And the cam advance will alter ognition tables too, I suspect the drop in cam advance will allow extra ignition advance and better economy/torque at cruise.

View User's Profile View All Posts By User U2U Member

posted on 10/4/20 at 07:42 AM Reply With Quote
I fitted a VVTPRO to an ST170 in my Quantum. Ignition was MJ and fuel was via ZX6R carbs. I just ran the base map in 2D mode with full advance early on backing off as the revs rose. Seemed to work really well and had a perfectly smooth torque / power curve. Ended up at 178bhp @6800rpm. Didn't bother messing with it as I was happy how it pulled from tickover to the redline
View User's Profile View All Posts By User U2U Member

New Topic New Poll New Reply

go to top

Website design and SEO by Studio Montage

All content 2001-16 LocostBuilders. Reproduction prohibited
Opinions expressed in public posts are those of the author and do not necessarily represent
the views of other users or any member of the LocostBuilders team.
Running XMB 1.8 Partagium [ 2002 XMB Group] on Apache under CentOS Linux
Founded, built and operated by ChrisW.