tuning

I was just wondering if you guys have any advice on tuning, I'm going to be putting in a safcII next weekend. I have a 2nd gen with turboback exhaust, mbc, bov, intake, and a lotta other stuff, just not a turbo upgrade yet. I was planning to lean it out a little because its really rich right now.

Ok first off how do you know it running lean? You don't...you need a wideband O2 sensor, or a slow EGT. Then you find out the ideal AFR and tune your car to it. I doubt the car is running rich if anything its running to lean right now....depending on your boost setting. Your best bet is to get a wideband first before the AFC....the AFC is useless with out it, don't even try to tune with out it you will probably blow your motor, especially if you think you want to lean it out.

quote:

ORIGINAL: NESpeed

Ok first off how do you know it running lean? You don't...you need a wideband O2 sensor, or a slow EGT. Then you find out the ideal AFR and tune your car to it. I doubt the car is running rich if anything its running to lean right now....depending on your boost setting. Your best bet is to get a wideband first before the AFC....the AFC is useless with out it, don't even try to tune with out it you will probably blow your motor, especially if you think you want to lean it out.

He is 100% correnct on all points. I have an SAFCII and a wideband and trust me it is easy to tune and figure out but without the wideaband you are risking blowing your motor pretty easily. If you have bigger than stock injectors then your rich if not you are probaly on the lean side slightly I would strongly not recommend tuneing with out the wideband if you have one youll have your car tuned within an hour it is that easy but you also know youll be in the safe zone still and not risking blowing it up

http://www.extremepsi.com/store/customer/product.php?productid=17953&cat=747&page=1

should i get this since im going to put an safc in my car to?

yes

thanks, after i get that and the afc installed can you guys help me out with it.


im pretty sure you will but i just want to ask.

that is what you want bat that is a high price for a wideband O2. Try either ebay (not totally a good choice but an option) or go here, it is much cheaper. You don't need the PLX one if all your using it for is the SAFC

http://tearstone.com/shop/index.php?option=com_virtuemart&page=shop.browse&category_id=105&Itemid=2

yeah i dont totally trust ebay. and ill go with the wideband from tearstone.

quote:

ORIGINAL: 93eclipsegsx

yeah i dont totally trust ebay. and ill go with the wideband from tearstone.

My wideband is from tearstone and it is easy to read and it is interchangable too, meaning you can change it so it has a black or white face and a black or silver bezel

Do you have any fuel mods? If not you should really consider purchasing a fuel pump and injectors before or with the AFC....

quote:

ORIGINAL: NESpeed

Do you have any fuel mods? If not you should really consider purchasing a fuel pump and injectors before or with the AFC....

I think the SAFC would be better to buy before the fuel and just leave zerod out other wise he will have to wait on installing the injectors if he buys them before the SAFC

ive got a walboro 255 right now.( not quite sure on the spelling) but i thought id get a safc now b/c i know a guy who has a brand new one for 200. thought it was a good deal so im gonna buy it and then get some 550 injectors.

quote:

ORIGINAL: 93eclipsegsx

ive got a walboro 255 right now.( not quite sure on the spelling) but i thought id get a safc now b/c i know a guy who has a brand new one for 200. thought it was a good deal so im gonna buy it and then get some 550 injectors.

that should work out, you may even have a small use for the SAFC with only that fuel pump but if your getting injectors shortly I wouldnt even bother tuning it untill then

Don't forget to install a adjustable fuel pressure regulator.....you need one bad with that Walbro if you don't already.

ok, the pump isn's installed yet so ill go out and get one.

so would you guys recommend me to buy a aem uego wideband, or a data logger, I am able to get the logger for cheap? but basically they will do the same thing right?

quote:

ORIGINAL: nate5023

so would you guys recommend me to buy a aem uego wideband, or a data logger, I am able to get the logger for cheap? but basically they will do the same thing right?

The AEM UEGO read AFRs in real time digital I dont think the datalogger does but I think with both the logger can log the UEGOs readings at a given RPM which is ideal for tuneing. I may be wrong I have never used a datalogger just the AEM UEGO

if you want a data logger the best one to get is dsmlink. wwwdsmlink.com

Since were talkin about fuel setups, how do I know what size of injecters to get and would it be a wise idea to replace to fuel rail? and the fuel presure what should that be at? This setup would be for my 420a with built bottom end, star turbokit and port and polished head with 1mm oversize valves, just to give you background on what im using this for. and Is the amount of boost I give my motor depending on the fuel setup?? this is my first motor build up

quote:

ORIGINAL: eclipseo

Since were talkin about fuel setups, how do I know what size of injecters to get and would it be a wise idea to replace to fuel rail? and the fuel presure what should that be at? This setup would be for my 420a with built bottom end, star turbokit and port and polished head with 1mm oversize valves, just to give you background on what im using this for. and Is the amount of boost I give my motor depending on the fuel setup?? this is my first motor build up

all of that depends on what you tune the car with and what PSI you will be running. Talk to Slow420a I think they sell fuel kits with everything you need for the 420a

I want to run the highest and safest psi for daily driving, just like everyone else, Im not sure what High and low boost is best for these cars, im still learning, I know 25psi would be pushing it right?

quote:

ORIGINAL: eclipseo

I want to run the highest and safest psi for daily driving, just like everyone else, Im not sure what High and low boost is best for these cars, im still learning, I know 25psi would be pushing it right?

25 PSI is not pushing it depending what mods you have, stock turbo will never do that much. a 16G wouldnt even do that much. I mean a 16G can get you almost 400WHP which is still good on the stock motor and add some cams you good to go. I have the stock EVO 16G running 21PSI daily with Full exhaust and tune. on my car 16 PSI is stock boost 20 is stock for newer EVOs on a DSM stock is 9-12 so that is low boost. high boost would be anything 18+ IMO