99 ECU reflash...with ceddy mods need advice

[97vadergsx]

I bought a 99gsx ECU with a tune already on it,this is the list of what's done to it. I would like to know what exactly some of these things mean. It's from dsmchips.com

1. Ceddymods V1.9ab
2. no fuel cut/ no boost cut
3. readiness test fix
4. 5 knocksum per division knock gauge
5. knock MIL at 03 knocksum
6. 9250 rev limiter
7. 4750 stutterbox launch rev limiter
8. 950 rpm idle
9. 11.0:1 openloop AFR targets
10. 950cc injectors/315us deadtime
11. set base fuel pressure at 37psi
12. custom 93 octane timing maps for 9.0:1 compression

I know what some of the mods are, but what exactly is in the ceddymods?

I tried to find to out but couldn't come up with anything. The knock settings I don't about, like if that's good. My boost gauge is now a knock gauge? I have 780cc injectors but my car isn't running rich, I put new plugs in and have been driving the car on 20 psi of boost and they still look clean. I'm worried it's not getting enough fuel, the knock gauge doesn't move when I hit it.

I just got the Evoscan 2.5, but my laptop uses Linux so I can't data log. My internals are stock I believe so I don't know what my compression is, is this ECU ok to run for now?

If anyone has the Tactrix cable and live near by can you please come by and take a look at what is going on. This is my first DSM and I don't want to hurt it. Any info is much appreciated.

 

[yepes281]

Knock is when gas ignite before its supposed to, that = bad.
If your boost gauge is made into a knock gauge, then if your car starts to knock a certain amount of times, the gauge will move letting you know your knocking. If the gauge is not moving, then your getting plenty of fuel.

If your car was tuned on those setting and you havent touched it, then the car is fine and leave it as is.
If your tuned for 9.0:1 compression then you probably have upgraded internals.

 

[Absit]

I bought a 99gsx ecu with a tune already on it,this is the list of what's done to it. I would like to know what exactly some of these things mean. It's from dsmchips.com
1.Ceddymods V1.9ab

Have you tried searching this forum for "ceddymods"?

2.no fuel cut/ no boost cut

You don't get boost cut anymore.

3.readiness test fix

You'll pass emissions readiness tests.

4.5 knocksum per division knock gauge

Your boost gauge is now a knock gauge.

5.knock mil at 03 knocksum

At Knocksum 3 you'll get a check engine light.

6.9250 rev limiter

That's now your ECU-imposed redline

7.4750 sutterbox launch rev limiter

That's your ECU-imposed redline in neutral.

8.950 rpm idle

...

9.11.0:1 openloop afr targets

For some reason you're now shooting for 11:1 in open loop, throughout the load band?

10.950cc injectors/315us deadtime

Your ECU is now compensated for 950cc injectors, any injectors other than 950cc will not work.

11.set base fuel pressure at 37psi

That's not in the ECU..

12.custom 93 octane timing maps for 9.0:1 compression

Timing was tuned for a car that's not yours, enjoy.

Now it's my turn to ask a question: why did you buy an ECU with options you didn't understand?

 

[97vadergsx]

The ecu wasn't tuned for my car, I bought it with those mods already on it. I know about knock, I don't know what those settings mean though. I'm worried about fuel because of how the plugs look, I spiked like 28psi almost and it did buck for a second. I used to have a DSMlink V2 in it and had it set 26psi for a little while and it never did that. So I now I have it at 20. It just clicked over to 99,000 miles so it's not a high mileage car. It was maintained very well. The plugs just look too clean to me, I'd rather have them a little black, cause then I'd know that I definitely had enough fuel for the boost I'm running.

I understood most of them, I'm not an idiot. I did search for those Ceddymods and didn't find V1.9ab. I didn't know exactly what the knock settings meant and what is in the Ceddymods exactly. I have intentions of getting the ecu reflashed, my DSMlink V2 lost the tune without having the battery disconnected and my anti-lag and 2 step would not shut off when I drove the car. When I bought the car I didn't know it had a DSMlink in it, and I didn't get the cable for it. So I just bought the ecu so I could at least use the car. And what is with the attitude? Totally out of line.

 

[colbyc]

Okay well you're ecu is basically "tuned" for a totally different setup than yours. Find a local shop that tunes Evos or subies and they should be able too help you greatly. It's dumping the fuel for 950's basically and you have 780's, go figure? Too much fuel can kill an engine as well as not enough fuel man, go to the search bar and type in "ecuflash" and after reading that WHOLE thread go back up and type in "Ceddymods". There's alot too learn so taking it in is going too take a little time.

 

[Absit]

The ecu wasn't tuned for my car

Clearly.

I spiked like 28psi almost and it did buck for a second. I used to have a DSMlink V2 in it and had it set 26psi for a little while and it never did that. So I now have it at 20, I don't even know if that's safe for stock internals.

You've been blowing your car up.

I understood most of them, I'm not an idiot.

I disagree.

I did search for those Ceddymods and didn't find V1.9ab

You have to read the entire Ceddymods thread.

I have intentions of getting the ecu reflashed

STOP DRIVING THE CAR.

And what is with the attitude? Totally out of line.

Are you ####ing kidding me?

 

[97vadergsx]

I have been reading that thread and about the Ceddymods. I couldn't find what is in the Ceddymodsv1.9ab. I just wanted to make sure it's not gonna kill the car just driving it normally and find out about the knock settings. I went to wyotech for asian motorcycles and am certified for tuning motorcycles with the Dynojet power commander. I'm just not experienced with all the different settings that go in when it's a car. I have been researching about this, I wanted to see what other peoples thoughts were. I'm not entirely sure I want to do this by myself, hence why I'm reaching out. I need the car for work and want to make sure I'm not hurting it.

Why are you being nasty?? I was asking for opinions and help, you don't have to be a dick because someone isn't that knowledgeable with these specific mods. Like really???

 

[Absit]

Sorry - best of luck.

 

[colbyc]

Ceddymodsv1.9 is the newest rom file he has out. His website is down but you can go to www.ceddy.us too find more out.

 

[SpawnedX]

Hey Vader, for starters not many people go this route, of those who do most are clueless and eventually go to Link (which I think everyone should do). Of what is left, most don't visit this forum, of those who do not many do it frequently. So for help, you have very few active people to rely on. Perhaps you should rethink your words when talking to them.

 

[97vadergsx]

ok I didn't know that about the Ceddymods, I was just going by what was on the paper that came with the ecu. I have never seen that knock gauge move at all, I keep a very close eye on it when I do let the car make boost. Since you are saying I'm at risk of hurting the car I will immediately turn the boost down. Thank you for straightening that out, I'll put it to 10 since that is the lowest I can adjust it. I had no choice but to get this ecu, I'm jobless at the moment and need the car for a job I'm about to start. I have a family to support and money is tight. I couldn't find the DSmlink cable for sale at the time, and even if i did I don't have the money for dyno time. This ecu was the only way out for me at the time, before the car wouldn't go past 3,000 rpm without the anti-lag coming on. I was not being nasty at all, I just felt like he was belittling me.

 

[etay89]

Ceddymodsv1.9 is the newest rom file he has out. His website is down but you can go to www.ceddy.us too find more out.

Ceddy's site has been down for awhile. The First Flashed ECU thread, none of the links work so for the time being, a little SOL, but if there's something you truly don't understand, just search, ask questions in the appropriate forums, etc.

I, myself, am learning ECUFlash/Ceddymods. It's the cheap man's DSMlink so to speak, but I would stop driving on that ECU (or atleast edit some of the options, like injectors and fuel maps so that's its safer to drive).

 

[97vadergsx]

Ok thank you for the info, I have to get the Tactrix cable. I already have Evoscan 2.5 and cable but my labtop runs on linix and I have to change the operating system to windows. Even babying the car is putting it a risk? I know boosting it is definitely risking it, but if I drive it and don't let it make boost is still a big risk? I have been researching as much as I can, having a 2 year old son makes it very hard at times.

 

[colbyc]

A quick 5 minute search shows me there's about 3 tuning shops around you, call one of them up and explain your situation. Like I said if they can tune an evo or subie they can more than likely tune your car.

 

[etay89]

I'm not gonna lie or mislead you. If I'm not mistaken, base fuel pressure is 43psi, not 37psi. Stock 2g compression is 8.5:1, so I'm guessing the guy was boosting his car to all hell.

What'd I'd do is get ahold of some stock injectors and find someone with the Tactrix cable then flash it back to stock. I have a stock 99 GSX rom so if you need it, I'll send it your way.

edit:

A quick 5 minute search shows me there's about 3 tuning shops around you, call one of them up and explain your situation. Like I said if they can tune an evo or subie they can more than likely tune your car.

While that's probably true, they may charge him. Some people are like that, just to flash the ECU back to normal. People are shady like that sometimes.

 

[97vadergsx]

I'll definitely look those shops up, Thank you for letting me know. It's just a money issue right now, my friend and I are gonna split the cost of the Tactrix cable. I will study the tuning threads extensively and do as much as I can myself to save money. Thank you guys for helping me out. Hopefully it will all come together soon. For now my gsx is gonna be a big paper weight.

 

[etay89]

One more thing? Your car now is a 97 GSX (as your profile states) right?

If that's the case, then you're gonna need a reflash connector. Along with the Tactrix cable, you also need the reflash connector. If it is a 97, then you can wire the connector from the ECU pin #79 to the Tactrix cable.

The only way you "wouldn't" have to do this is if your friend had a 98/99 Eclipse with the connector already installed. Then, all you would have to do is copy his stock ROM image (or I'll give you mine, whatever works), then swap out ECU's then use that stock ROM image and flash it onto your ECU.

 

[97vadergsx]

Yes it is a 97, I did read that in the thread. My friend has a evo9, he wants to reflash his car. He has been researching as well, why flash it back to stock?? Because the timing maps has been changed?? Like flash it stock then go from there is what your saying correct?

 

[Absit]

Yes it is a 97, I did read that in the thread. My friend has a evo9, he wants to reflash his car. He has been researching as well, why flash it back to stock?? Because the timing maps has been changed?? Like flash it stock then go from there is what your saying correct?

Yes, don't start with an already-hacked map. Start from stock and tune properly.

 

[etay89]

Yes, don't start with an already-hacked map. Start from stock and tune properly.

Bingo. Also, I have a stock Ceddymods v1.9cb if you need it as well. Just PM me your email address and I'll send you compressed files: one of Ceddy and the other of a stock GSX

 

[97vadergsx]

I sent it to you. I gotcha, Thank you gentlemen for all your help and information. I will flash it to stock and go from there. This car will be one hell of a dd when its done. I have been researching this subject a lot, I just always ask questions to make sure I'm understanding everything properly. I always double check with people.