Resolved 1G EPROM ECU and chip questions

[wvturbo2]

I did a search and found some helpful info, but nothing that really told me for sure one way or another. I am gettin an EPROM with compensation for 660 injectors. I also will have 680 injectors in the car with 190 fuel pump. I was wondering if this will leave me a lil bit of room so that i don't max the injectors out.

Also will the ECU keep the car running good or is it still gonna need tuned some more? I will be putting a wideband on the car hopefully soon what AFR should i be running?

If i want to would it be cheaper to get a chip made tuned for my setup or buy a burner to do it myself?

Any info will help. Thanks and once again i did search so if you find something I didn't please don't burn me.

 

[awdrst]

You should have some room with the turbo listed in your profile. I used a keydiver chip with my 650's and I ended up taking just a little bit of fuel out to get to 11.3 afr. BTW I was running a 20g and my idc's were around 73% or so.

 

[daren_p]

I'm assuming you got the chip used & that's why it isn't for the specific injectors you'll be running?

In most cases its still a good idea to have some sort of device for fine tuning, such as an SAFC even when you have a chip burned. Now I guess if you play around enough you can get a chip that's made for the exact compensation you need to run. So yes, you should have another device for fine tuning. As for what A/F ratio its not a set in stone value as every car/setup can be different. The norm is to shoot for 11 to 1 on pump gas, unless you can only get low octane pump then you would want it a bit richer. Boost makes more power vs air/fuel ratio so most opt to run slightly richer if it enables them to run more boost. 10.5 - 11 & you should be doing alright, as from factory you run a rich ~9.5 to 1.

Get that logger out & see what your setup likes best, as for those injectors they should be enough for your turbo.

 

[wvturbo2]

How much boost do you all think I can run? Would I be better off running the EPROM and chip or keeping my stock ECU and emanage?

I don't have a logger, but I do have a wideband that will be going in soon.

 

[awdrst]

I ran a EPROM ECU with a chip and used a emanage to fine tune my setup.

How much boost you can run is hard to say without watching you IDC's and knock. I would suggest you getting a logger they are very cheap now and are worth every penny spent. I would start off safe at 15 or so and go from there make sure everything looks ok in the log and up the boost from there.

 

[wvturbo2]

Well i know i can run more than that ### im pushing 15psi now on stock ecu emanage is installed but not adding anything, also stock injectors and fuel pump. I smells as if its running rich as hell.

Do you all think it'd be better to get the Eprom or just run the Stock ecu and emanage?

 

[daren_p]

A logger is a better investment over a WB, reason being you can have what you think is a safe air fuel ratio & while it may be fine for another car, there are so many differences and things that might not be 100% on your car. Even though the air/fuel looks good you could be knocking & possibly do damage. Get the logger first before you start turning up boost. A WB is a great addition to a logger to complete the tunning package. How much boost you can run depends on to many things to give you a set value, the only way you can tell how much boost is safe is to get a logger & do some pulls.

 

[wvturbo2]

That sucks i really didnt want to pick up a logger. I guess ill just have to look around for one. would i be better off keeping the stock ecu and emanage or getting the chipped eprom ?

 

[daren_p]

Haven't looked into emaanage but I will assume its still a piggyback system? If this is the case I'd recommend the eprom chip. With the chip you will have proper control over your timing, which you don't with a piggyback system. With the piggyback the larger the injector the more advanced the timing making it much harder to tune & not get knock. 650's are the max recommended for a puggyback system. Your a 1g so I logger setup will basically cost you nothing. You can pick up a palm cheep on ebay if you don't already have one, the cable is simple to construct if you have some basic electrical skills, if not they can be had for cheep as well. For software you can download freeware off the net. Can easily have a 1g logger setup for under $100, 2g is more so there is no reason for not having a logger setup for a 1g. Plus your motor may depend on it as even with a what you think is good A/F ratio on your wideband you could still be knocking.

 

[wvturbo2]

where do u get free software for the logger ?