M45 w/megasquirt dyno sheet/video
 

Hi,
I just got a megasquirt installed to go with my M45 and took it to the dyno for some fine tuning and dyno numbers.

Just wanted to share my numbers. The video pretty much says it all...
Feel free to ask if u got any questions...

143HP AND 133 TQ

https://www.miataturbo.net/attachmen...ine=1334407475

VIDEO

http://www.youtube.com/watch?feature...&v=Ph0hwSdXSO8

looks like it would be a pleasure to drive, just a nice little bump to the tq curve.

Nice numbers man, congrats. The car looks great too.

Seriously, that car looks so damn clean....Got some more pics for us?

The M45's can be great fun. I was able to get mine to just under 170whp and I had a blast autocrossing that setup.

Man, your car looks a LOT like mine.

That's a great torque curve for DD and autox.

I was always worried about adding the load of a SC to the small-nose crankshaft. One of the main reasons I went turbo. Do you still have a small-nose, or have you moved on from that issue?

Ever make it up to MSR-C? I'd love to see your car.

thank you!

Yes i know not a big bump in power but enough for my needs for now, its a blast to drive, instant power mid corner on demand :)

Small-nose crank still there... im sure there are tons of info on how to "deal" with this problem but if u could narrow it down to one option what would it be to "fix" this? i kinda have the mentality that if it goes i'll just get a 1.8...

And no i havent gone to MSR, ive wanted to go though...
and thanks

This is the latest pics i have until i can detail it and take some proper pics:

https://www.miataturbo.net/attachmen...ine=1334507221
By oscargarza88 at 2012-04-15

https://www.miataturbo.net/attachmen...ine=1334507221
By oscargarza88 at 2012-04-15

https://www.miataturbo.net/attachmen...ine=1334507221
By oscargarza88 at 2012-04-15

https://www.miataturbo.net/attachmen...ine=1334507221
By oscargarza88 at 2012-04-15

https://www.miataturbo.net/attachmen...ine=1334507221
By oscargarza88 at 2011-11-17

170 is quite a bit.. im guessing you had injectors, fuel pump, smaller pulley to pull this off? if so which injectors because this is the next engine step i want to do, but for now, after this i am planning on getting my 21 yo suspension caught up.

I did the Locktite thing on mine. That was about 50K miles ago (I'm about due to swap the timing belt again). Cheap and easy to do whenever you change your TB.

Love the picture under the trailer.

Great DD setup. Good job

Cool, i will look into it thank you.

Thanks, itll do for now :)

oscar: I am going through a rebuild of my M45 right now as well, adding a MS to it and looking to get msq files to get me in the ballpark. Any chance you could send me yours to take a look at? Thanks.

Nice fender mirrors. What mirrors did you use?

Yes i can do that, sorry its been a while ive just been busy. also not too familiar with the sortware or the MS for that matter so ill give it a shot


Thanks
I used the MR 300 Raydot Mirror. I would look a little harder if done all over again since once you tighten these you cant adjust them. So u kinda have to get it right the first time.

I also have a 1.6 with the M45 blower (Silverstone as well :bigtu:) Mine made 140 hp with AFPR and JR Boost/Timing retard unit. Granted, the Dynodynamics dynamometer is said to read 10%~15% lower than a Dynojet.
The charts show the before and after the supercharger installation.

https://www.miataturbo.net/attachmen...ine=1338231096

https://www.miataturbo.net/attachmen...ine=1338231096

I want to go with the MSpnp to see what I can get powerwise and to optimize my fuel delivery/use.

I know that I'm going to have to get injectors and I was looking at the Mazda #195500-2150, 326cc (Probe turbo/B2600 truck) injectors. I found some in the used parts for as little a $50 but who knows if they are the right ones? I found a website where they can be purchased for $253 (reconditioned). I don't know if this is a good idea or not.

I would love to hear some suggestions or ideas about this too....

https://www.miataturbo.net/attachmen...ine=1338231096

https://www.miataturbo.net/attachmen...ine=1338231096

https://www.miataturbo.net/attachmen...ine=1338231096

If you are under 7lb of boost (I assume) you could just use Supra injectors, 305cc, which are direct plug and play...

My blower makes 9 psi. I have been told I need 320cc injectors. The Mazda #195500-2150, 326cc are supposed to be plug and play as well (assuming I use an EMS of some sort). I'm thinking MS pnp....

First of all nice looking car!! it looks great all around! what side skirts are those?

And yes, thats the main reason why i went with the MS, not as much to get more power but just to keep the SC under full control an not have to worry about engine mismanagement or knocking, which in the heat it did alot of...

havent heard about supra injectors, but i was recommended rx7 ones, don't remember which generation Rx7 though...

Wow you are running 9psi with stock injectors? and stock fuel pump?
I thought my injectors were pretty much 100% duty cycle, i didnt know they could handle more psi.

Next step for me down the road after i mess with suspension is to do fuel pump, injectors and then be able to add a smaller pulley to get around 10psi mark, im really happy with the amount of power right now though, it will do for a while.

Thanks for the compliment Oscar. Those side skirts are from RSpeed and I like them a lot.

I'm running stock 1.8 injectors. They are 15% larger than the stock 1.6 injectors. Also, I am running the AFPR which allows them to run a lot more fuel. At 96 psi and 6 lb of boost they will deliver 396cc. Take a look at this link. Now, if you are not running larger injectors or an AFPR with your system, you cannot make very much power and risk engine damage. Do you have an AFPR?

If you do not have an AFPR you must hurry and get some 320cc injectors. Don't worry about the fuel pump. The stock pump is quite sufficient for the HP you will make. This explains why your power output is modest from a intercooled SC with MS ems.... I would expect to see around 160 whp or better from a car like yours (unless the dyno reads very low)

I thought about going with 1.8 injectors but figured if im going to upgrade might as well upgrade once and get bigger ones.
I do have a AFPR, its a BEGI unit which is a old one and came with the car, but it works good enough i think.

What are your afr's at WOT? seems like mine could be leaned out a bit more to get more power, im averaging 12 at wot.

I can't remember off hand but if you look in the pictures of the Dyno sheets I posted you can see them. They are very rich.
A/Fs in the 12's is supposed to be pretty good from what I hear, but I don't know enough to opine intelligently.
Do not waste time and money with 1.8 injectors since you have the MS. Just go with 320cc and ditch the AFPR

I would agree with silver92b.

If you are using a piggyback, the best injector is a 305cc injector from the Supra.
The 1.6 cannot idle anything larger than that I believe.

Since you are using MS, I would say go with the 326cc gray ones from a 626 or B2000.
They are plug and play.

Next step would be RX7 injectors, 440cc-460cc, good for at least 230-250whp. Easy to find.

this thread is awesome it gives me a great idea of what kind of power i will be looking at

It all depends on the car and the setup. No 2 supercharged (1.6) cars are the same. There are some that make 165 whp and others that make 140 whp. The superchargers do work to make more power than a stock N/A motor, but I think they are limited in power making potential. There are just too many more options in blowers for turbochargers.

In reality, the turbos make more power easier than the roots blowers. Still, I have a M45 Eaton blower and I'm going to stick with it for a while. If I had money to burn, I'd try a nice turbo set up, but hey! I have the SC already.
Any more mods I do can be used with a future turbocharger set up. For instance, an ECU upgrade or injectors upgrade can be used on a turbo. Also, a water injection system can be used with a turbo.

It all depends on what you want and what you can afford. Maybe you run into a killer deal on a used SC. Then why not? It sure is nice to increase your HP and TQ by nearly 50%! That is what a typical M45 SC will do for your typical 1.6 engine. That's with stock injectors and with a primitive, old school fuel & ignition patch. An AFPR and a boost retard control is all you need. Just tune it and adjust your base timing and fuel pressure for safe operation and away you go.