Sup guys ,

I recently complete a VQ35 swap using a megasquirt2
I am pretty happy the way it turns out , it tork like hell , however i am sure there is room for amelioration , especialy on my advance table


I plan to built a knock circuit into the ms , but i dont want to push it until it knock.
Now i know most of you run EU ,
I wonder how much Degree y guys run max
what your map looks like
Heres mine , feel free to comment it !
its rmp / Kpa(map) based



I am also wondering , witch RPM do you active your VIAS 1800-3600 or somthing else
thanks Hightuner

 

Alright! some1 is finally doing something outside of the normal, congrats!


Anyways, 3.5 VI is open by default and it should receive a signal to CLOSE from 1800 to 3600..... but then again, you'd get a nice increase in power after 5500 if you gut the manifold. So consider doing this later, that with an extended redline.... wow

Just a question, the values on the table, is that the value of timing ADVANCE by itself or the advance ADDITIONAL to stock timing (the two combined)?

Also (I feel like a n00b for asking) the kPa value, what is the MS using to determine that? or do you just have that hooked up to the TPS or something?

Again! Thank you for doing something most others dont

 

Hi 95BLKMAX
Thanks , i got help tough !

Do you mean i should activate vias at 5500 to redline ?

I think
It is measured in degrees before top dead center , I have no stock ecu , only ms

The ms use a map (intake pressure sensor) instead of a MAF. But it also use a tps and other sensor
More info about the ms at http://www.megamanual.com

tuning: http://www.megamanual.com/ms2/tune.htm

 

No I meant to say that if you gut the IM (take out the power valve and cut off the shelf inside), you eliminate the VI stuff, this creates some amazing power after 5500rpm all the way to redline.

 

ha ok thanks , i really need to read more about that.
I just dont visualize what it physically do , cant we do that by choosing RPM its activated or just deplug it ?

thanks

 

Anyone , tried advance tuning on dyno ?

Edit: also wondering ,at what rpm you set yout redline 6500 ??

 

well, you want timing to be least advanced at peak torque and more advanced on either side of the peak especially at RPMs higher than peak torque. it seems to me that is not what is happening in that map...

congrats on getting the MS up and running, that's cool.

 

Hi Neal , thanks for the hint

Is it true to say that peak torque is around 4,400 rpm

Do you consider decresing to 30 would be good ?

 

Does this replace your ecu? How do you deal with emissions and OBDII concerns?

 

Hi Jeff92se

yes it replace it , its a stanalone

There is no emission test here in quebec , and i do not run a catalyser
however it would be possible to run a cat

and tune this way
Retard your ignition timing by ~5° to 10°
Increase your idle speed slightly -
Add some alcohol (often available as gasoline anti-freeze)

and other tricks , you wil find more at http://www.megamanual.com/ms2/tune.htm under ''Tuning for Emissions ''

I do not have OBD2 anymore

 

I don't pretend to know the specifics of timing on a 3.5 but I know there are members here who do, and can give better advice as to what specific values to run. Torque peak is usually somewhere in that neighborhood, you could check out the dyno section for more info on that.

 

Cool ill continue my quest.

however thank again , I wish i had a spare 1900$ hehe

 

Under normal driving(idle style), timing should be 15-17, no need to have less. At partial throttle, timing jumps to 30-45+ I have noticed. And at WOT, 35 is just fine. You should dyno tune to find the perfect numbers tho.

 

Nice , thanks for chimming in Kevlo911

Are your number from a A33b stock Ecu ? Or your custom EU , TS

Ill do a dyno for sure , But for now I am saving to clear my CC and a get suspension setup , probably Illumina , HR combo

 

Stock, the base timing is 13-15/17. Most people upgrade to 17 and advise you do the same. As for the WOT numbers, that is what I believe is a very nice advance from the stock maps w/o knocking. If you search around you will find stock A33b timing graphs

 

Ok thanks for clearing that up , ill look for those graph for sure
and bump my 15 to 17

where you put ur redline and Vias ?? just btw hehe

 

I have a VQ30, but for a VQ35 with a stock valvetrain; I would have a redline around 7100 and shift around 6800-6900.
The stock vias CLOSES at 4400 IIRC on the vq35, you should mod the IM so you get better top end to utilize the 7100redline, I am sure someone will chime in on how to do it.

 

Sweet , 6900 sounds crazy

I am very interested by the vias mod , i tried to find post about it but cant find it.

basically it use short runner all rpm long , does it still activated or not , i must admit i am lost .

i try different run 1800-3600/ 3600-6000 , ON OFF , and i couldnt find any difference by feeling of corse

 

It's a moot point, but let's not get peak torque and VIAS operation confused.

http://forums.maxima.org/showthread.php?t=457652

Read everything aside from the first quote and reply.
http://forums.maxima.org/showpost.ph...0&postcount=28

 

Hi NmexMAX

Thanks for pointing those posts

Sci fi physics behind the Vias are way over my head.

Are vias mod really noticable , i dont want to mess whit my Intake and realize it doesnt worth it , dyno bumber ?

i have no Vtc at the moment

 

it is definaetly worth it for top-end as I have heard, but u really see the difference w/ an extended rev limit, I am currently looking 4 someone wit a dremel to help me w/ this mod as well

 

Do you notice how after 5500 it seems to flaten out powerwise- like you reach a platteu?.... Imagine the surge in power in the 4k region and early 5k region, CONTINUING to redline. :-D Thats about the best way I can describe it.

How to do it, take off the elbow and power valve, take a sawzall or reciprocating saw with a metal blade obivously and go downtown with it on the VI's shelf. Once the shelft is cut off, go in there with a stone bit on a dremel and smooth out the edges. On the Powervalve thing that gets bolted to the side of the IM, cut off the powervalve, its rod, and its surrounding, so as to leave just a plate (with the rod removed, it could be possible for the remainder to just fall off, I fixed with by sticking it with JBWeld on the outside, that sucker is going nowhere now). Done. Enjoy the newly found top end power

 

MaxBlack97
I am glad to heard it definaetly worth it

Now this really sound like the Honda Vtec lol

As for the dremel , i bough an cheap brand whit the case for 10 buck cnd

Its so true that our engines Pull hard at low rev and seems to get breathlessness around 55000
that would be really great to ameliore performance in that area

95BLKMAX
I appreciate
got any pics

Edit: Just thinking , i remeber reading ppl saying it hurt around low rev ,
does it apply to this Vi mod ?

 

you wont notice it sounding like vtec because there is no switch point, but it does scream up top

ive never been to 55000, but at 5500 yeah it does lose breath with a stock im, and with a stock im they are torque monsters


yeah you will notice a difference, but with a 4.5 gen you cant use all that torque anyway and with an extended rev limit it is much more well worth it

 

trust me, the power u make uptop (especially with an extended redline) is WELL worth the slight compromise at the midrange. And dasyears is right, at the end of the day, you're putting a 3.5 on a car that weighs ~250lbs less than a 5.5gen, and a good 2000lbs less than a 6th gen , so the slight loss in midrange is of no concern for a 4th gen, lol

 

anyways! bank on topic, this isnt about the gutted IM, this is about the timing map he's using.

 

I was just wondering if you could raise/set the rev limiter with the MS2? The DIY MS2 v3 kit only costs $250 which is a savings of $250-300 (for those that can solder) when compared to a new EU .... If this can do everything the EU can... then I am getting my self a MS Also do I need one of them expensive WBo2 sensors with guages/displays or can I just use a cheap-o with the MS2?

 

Hi sir , i am glad you interested
i dont want to put anyone in error , but Ms aint easy. altough instruction are well describes and the way its done , its educational .

The way i did it use ford ignition , crank wheel, crank sensor , ford coil pack old school spark plug wire. That way its more easy and distributorless ''and use for old engines , converted from carbu to efi ."

Altough there is a way to get the ms ''extra firmware'' to read stock crank wheel and cam sensor and also coil on plug, but it will not be easy and experimental , but fesable

whith the ms you can set the rev limiter to what u want , fuel cut or spark retard wise. same thing for speed limiter, lock at 195 KM/h

you can activate pretty much anything whit output that can be trigger by rpm coolant sensor , or any other variable

I dont pretend its the best Engine management out there but its definally a good way to learn on the subject

I dont regret it at all !

If you want more check
succes story http://www.msruns.com/index.php
http://www.megamanual.com/
www.msefi.com
http://www.msextra.com/index.php

EDIT: as for the wideband you dont absolutly need one , a stock narrow band can be use , but i dont recommend it at all

you dont really need one whit display , coz u can see it in the laptop
again its handy. there is a diy wideband call jaw
http://www.14point7.com/JAW/JAW.htm
http://msefi.com/viewtopic.php?t=26503

I dont know too much about it , but i recommend the innovate LC1 200$ no display

I have a plx m300 and fit the display in my clock , it looks like back to the future lol
check my video u see ms in action
http://photobucket.com/mediadetail/?...e&pageOffset=0

 

thanks for all this great info.... i've seen the "extra" firmware online in a few spots (actually its right on sourceforge).... I will have to read up on those features somemore.... I would really like to be able to use the stock sensors.... i also noticed that the Megasquirt software (and also the firmware I believe) is GPL's (meaning opensource)... there is a linux version of the megasquirt control software

megasquirt could possibly be the best thing since sliced bread.... i never thought I would see and opensource ECU

EDIT: here is the link to the MS2/Extra firmware http://www.msextra.com/ms2extra

and here is a comparison of the features between all the versions: http://www.msextra.com/ms2extra/MS2-...l.htm#features

 

HEhe yes its indeed very neet, We dont see many of thoses free ''communitee'' open source anymore, and that why the internet is so great. Ive meet a lot of knoledge ppl on this forums and ms too.I tell you they help me a lot ,

As for stock sensor/ cop
if you prove you have done your homework ppl will definaly help you out and guide you in the right direction. Ms is universal is only a matter of making things work. hehe

unfortunally i am not a coder, id like too lol
megatunix (linux) is only compatible whit MS1 at this time , creator is working on ms2.

Have a nice week end !

 

Just curious, from what you know would it be possible to run a two step rev limiter? If you're not familiar with what that is, it's a different rev limiter that is only in effect when the car is at rest, so you could rev it up to a certain RPM (say 5500 or whatever) with your foot all the way on the floor to help make launching more consistent, and then once the car is moving the regular rev limiter would resume (6500, 7000, whatever you want).

 

Hi neal

What i said above is there is 2 way to set rev limiter ... however

I think what you mean is launch control
http://www.msextra.com/ms2extra/MS2-...ion.htm#launch

It alery exist ,someone alery code !

 

Yes, launch control is another name for what I'm talking about. Cool to hear that MS has it, and thanks for the screenshot to show all the options with it.

 

What did you use to fire the coils? And to read rpms?

 

i know this dosent answer kevlo's question but the Extra firmware and the MegaSquirt2/Extra firmware supports Coil on Plug now so you dont need to buy any Ford distributors or anything like that, however it does look like the router board is still in development so sequential firing might still be out of the question.... is batch firing that bad? hows the batch firing running on your setup hightuner?

 

.................

 

what is that from?

 

Sorry, I should have clarified. My car with TS ECU.

A33B, I/H/TS. No AFC or large MAF housing at the time.

 

Dude isn't running CVTC so his VE curve is going to be different. Ignition timing should be different to match.

 

as i said above
I used Ford Edis ignition module ... it looks like a sega genesis cartridge

ford crank sensor , wheel , coil pack , old school crown vic wires

I went this way bc i want to start whit something simple . it was my first big project and i dont wanna get lost.
but like rmh3093 says cop , and cop sequential is possible whit ms1, its possible in ms2 at the time but in wastespark only.
--------------------------------------------
there is a lot of devlopement at this time ..GPIO General Purpose Input/Output Board

Inputs
5 general purpose inputs [GPIx], which can have voltage or resistance input, depending on build-time options (based on the V3 sensor input circuits), these can also be used for software debounced on/off switches,
4 VR inputs [VRx] (based on Bruce's EasyVR schematic), for things like transmission controller, vehicle speed indications, or traction control,
4 EGT circuits [EGTx] (using AD595 chips), for independent exhaust gas temperature measurements. (These can also be configured for resistance or voltage measurements, similar to the GPIx circuits)

Outputs
4 general purpose outputs [GPOx] (which have user selected 5V or 12V pull-ups, flyback, and LED capabilities),
4 PWM outputs [PWMx] (based on the uprated V3 PWM FIdle TIP120 circuit),
4 high current circuits [VBx], using the VB921 ignition module driver

thats enough to do sequention cop , cam sensor , Even vtc pwm
--------------------------------------------------------
There is also a good thread on ms extra forums concerning cop on RB engine and nissan CAS
http://www.msextra.com/viewtopic.php?t=25379

And heres a good nissan Vtc speculation thread
http://www.msefi.com/viewtopic.php?t...riable&start=0

rmh3093.. actually i was quite impress how my car run ,at first i got it running but it was really bucky and pretty hard to drive. Then i meet someone who help me a lot ,the drivability is almost near stock , but pretty pretty much more agressif .

its still kind of a little bucky when warming up , but once it done it run pretty well. I had to get used to my act clutch too. i need to work on ,my accel , and a few other thing ,
I think i switch to ms extra soon ... and see how it goes , and try some goddies.

NmexMAX is this graph running at WOT ?