the rookie24

i have a 1992 rs tbi 305 and im thinking about buying a smashed 1988 iroc with 350 tpi and swapping it into my rs but im gunna build it turbo ready so when i have some more cash i can

my question is how hard is tunning the stock ecm i looked at megasquirt would that be a better option to do because they have software for the computer and all the cords u can buy

what would i need to do to tune the stock ecm like what cables and tools i need

also my car auto so will megasquirt control it or would i need to keep the stock ecm for the tranny

im not very good at efi so any help is great

Six_Shooter

iTrader: (2)

I would stick with the OEM ECM.

With the use of a few products you can have real time tuning, if you want to go that far, or just a few simple parts and hardware can be used for tuning the ECM, EPROM by EPROM. I prefer the real time method, saves so much time. The OEM ECM will also have no problem with TCC control, controlled by a few parameters, including vehicle speed. MSI and II don't have Vehicle Speed Sensor inputs and use a couple parameters that control TCC, but it can lock at lower speeds than it should.

Look in the DIY PROM forum for some specifics on parts needed to tune the OEM ECM.

I use products from www.moates.net, for my tuning.

Ronny

iTrader: (1)

six.shooter.... How well does stock TPI handle a boosted application? And assuming he already has a 7165 ECU same question. Is 7165 a MAF application?

black85vette

I had my 700R4 modified by a transmission shop to control torque converter lockup internally and eliminate ECM control. Kit was not very expensive but I don't recall how much it was.

Six_Shooter

iTrader: (2)

Most people that go boost swap to the '7730 ECM and run $58 or $59. I have heard of people using the '165 ECM with boost, with differing degrees of success, though. '7165 is MAF, but you know all of this....

Ronny

iTrader: (1)

One would think the g/sec would be in excess of the capacity of the maf sensor? I thoungt maf runs out at 200+ ?

the rookie24

what is $58 or $59.im new to this kinda stuff

Six_Shooter

iTrader: (2)

I don't run MAF, so you'll have to get that info from someone that does use MAF.

%58 is the code mask that the Syclones, Typhoons and Sunbirds (A couple of other vehicles too) used in their respective ECMs. It basically refers to an instruction set that is contained within the code. That's not totally accurate, but it's about the easiest way I can describe it to someone just getting into the game. Once you do a bit more research, you start to understand what the code mask means and how it is used for people tuning their vehicles. $59 is an adaption of $58, where extended VE and spark tables were added along with WBO2 fueling control and a number of other features. $59 info can be found at www.code59.org