or ever mentions the words "drift" or "stance"
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Originally Posted by thirdgen
(Post 1392039)
Yes, rleete is right. I am in no way trying to be a dick, and you habe to understand the humor on this site. In fact, if you would like help from somebody as sophisticated as myself, I would be more than happy to help you.
Pretty much what we're saying is it sounds simple enough to just put a big pulley on and run 4 more pounds of boost than you're running, but that 4 more pounds of boost can do lots of damage. Especially because I'm pretty sure you have a power card or something which does not control timing at all, and it's a poor way to control fuel as well. Please tell us more details about your setup. What kind of intercooler do you have? What size exhaust do you have? What are you using for a wideband? |
5psi on a MP62 kit, even off the shelf, is a little on the low side. You're probably running the default 95mm. For each larger larger crank pulley of 5mm, you're generally getting one extra psi of boost. Plan accordingly. 10 psi is roughly 200 rwhp on this kit, very repeatable results. You can still get different size pulleys from FastForwardSuperchargers.com.
Figure out what kind of fueling solution is being used by taking a pic of the stock ECU and whatever aftermarket card is patched in. |
Sorry for late responses. Wanted to find out info on miata but life had other plans and I havent had time to do much besides new tires.
Originally Posted by Godless Commie
(Post 1392326)
Just curious, What exactly is Murtaxa?
Is it Murtaza ot Murteza?
Originally Posted by ryansmoneypit
(Post 1392338)
I highly recommend against this. The average Miata bros are complete morons. Stick around here, read a bunch, save a LOT of money, keep reading build threads. In about a year you will be ready to take on your dreams of moar boost.
PS, stay far away from anyone who uses tems like "slap on this" or " Re-flash that".
Originally Posted by 18psi
(Post 1392360)
or ever mentions the words "drift" or "stance"
Originally Posted by RunninOnEmpty
(Post 1395155)
5psi on a MP62 kit, even off the shelf, is a little on the low side. You're probably running the default 95mm. For each larger larger crank pulley of 5mm, you're generally getting one extra psi of boost. Plan accordingly. 10 psi is roughly 200 rwhp on this kit, very repeatable results. You can still get different size pulleys from FastForwardSuperchargers.com.
Figure out what kind of fueling solution is being used by taking a pic of the stock ECU and whatever aftermarket card is patched in. |
Also, I wanted to ask you guys for recommendations for a good replacement supercharger belt? The firestone mechanic told me it looks worn out. I should've just asked him, but was in a rush
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Originally Posted by Murtaxa
(Post 1396771)
Also, I wanted to ask you guys for recommendations for a good replacement supercharger belt? The firestone mechanic told me it looks worn out. I should've just asked him, but was in a rush
its a secondary belt |
Originally Posted by adryargument
(Post 1396813)
thrash her till she pops!
its a secondary belt https://www.flyinmiata.com/na8-nb-ac...ac-and-ps.html |
Find the number on the existing belt. Buy a Gates equivalent - auto parts store should be able to cross match numbers.
Lots of factors determine size. What tensioner, 4 or 6 rib, what size pulleys, etc. Go here: Gates Racing Performance Micro-V® Belts if you need to know how to measure for a new belt. |
Take the belt off, go to parts store, lay it on the counter and profit.
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1 Attachment(s)
Originally Posted by rleete
(Post 1396884)
Find the number on the existing belt. Buy a Gates equivalent - auto parts store should be able to cross match numbers.
Lots of factors determine size. What tensioner, 4 or 6 rib, what size pulleys, etc. Go here: Gates Racing Performance Micro-V® Belts if you need to know how to measure for a new belt. |
Originally Posted by Godless Commie
(Post 1396891)
Take the belt off, go to parts store, lay it on the counter and profit.
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That number (1413ac) checks out as an 8 rib belt.
I'd take it to the parts store. |
Originally Posted by Godless Commie
(Post 1396894)
That number (1413ac) checks out as an 8 rib belt.
I'd take it to the parts store. |
Take a 3/8 ratchet (or 3/8 breaker bar), stick it in the square hole in the tensioner, rotate clockwise (or, you can stand over the drivers side fender and pull towards yourself) and slip the belt off one pulley.
It's easier than it sounds. Pic from google images, and not a Miata... Should give an idea, anyway.. https://cimg4.ibsrv.net/gimg/www.mia...59da2a63e4.jpg |
So I got the car dyno'd last week, and it showed that the AFR was all over the place, and always above 12. And the boost was actually between 6-7 psi So the guy recommended I get a tune. And he suggested i go with haltech for ECU, since thats what he works on the most.
If I'm gonna spend the mula on a ECU and tune, might as well get new pulleys and injectors. What do you guys recommend for ECU, and injectors. And what size pulleys would get me to 10-12 psi. Thanks in advance |
Originally Posted by Murtaxa
(Post 1406835)
What do you guys recommend for ECU, and injectors. And what size pulleys would get me to 10-12 psi. Thanks in advance
--Ian |
For ECU, if you are going to pay someone else to tune it, you get what they are good with.
Injectors should be easy to find what we all recommend here. For pullies, you have to go by the pressure ratio for a supercharger. So at 6-7psi, you are at a pressure ratio of 1.44, and you want to get to a pressure ratio of 1.82. So you need to increase the speed of the supercharger by 1.82/1.44 percent. Which comes out to 126%. So take your current pulley size and divide by 1.26. This may not be exact, but will get you in the ballpark. |
Originally Posted by x_25
(Post 1406837)
For ECU, if you are going to pay someone else to tune it, you get what they are good with.
Injectors should be easy to find what we all recommend here. For pullies, you have to go by the pressure ratio for a supercharger. So at 6-7psi, you are at a pressure ratio of 1.44, and you want to get to a pressure ratio of 1.82. So you need to increase the speed of the supercharger by 1.82/1.44 percent. Which comes out to 126%. So take your current pulley size and divide by 1.26. This may not be exact, but will get you in the ballpark. |
Your AFR should be above 12 if you are only reaching 6-7 psi.
And if you get a Megasquirt and a wideband you don't need a tuner. |
Originally Posted by Murtaxa
(Post 1406851)
Yea that's what I was thinking, but haltech is so expensive. And i believe it has the stock pulley setup of 95/65mm but i will double check.
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