R33 Gtr Ecu, Chipped By Garage Saurus

[nizmo_freek]

Hey guys

Picked up my r33 gtr a couple of days ago and have discovered that the ecu looks like it has been chipped by garage saurus in Japan, does anyone know exactly what they change when saurus chip their ecu's?, i have also noticed that both 02 sensors have been disconnected, would there be any reason for this?

I still seem to get decent fuel economy, got 200kms out of half a tank ofr 98, and i wasnt driving it easy either for some of the time, so that seems pretty decent to me.

I was a bit worried when i 1st saw the garage saurus sitcker on the ecu as i dont have a clue what could have been changed on it and if its safe or not, but the old owner had the car for 9years and never had a problem with it, also seems to be running rather rich as the bumper gets carbon stained.

Any help would be great.

Cheers

Jason

[R.3.2.G.T.R]

best to get the car on dyno to check if afr's are safe, i use blitz chipped ecu on my 32R and it has speed limiter (180km/h), boost limiter removed and rev limiter set higher.. also different tune will be on the modded chips depending on your car mods etc

[Beer Baron]

yeah checking the AFRs are one thing but dynoing it wont tell you what kind of ign they have wound into it. still considering it's been going for 9 years it's fairly safe to say it's not damaging the car at all... and there is no way of telling what type of tune it was given. every chip saurus make would be different.

[nizmo_freek]

yeah checking the AFRs are one thing but dynoing it wont tell you what kind of ign they have wound into it. still considering it's been going for 9 years it's fairly safe to say it's not damaging the car at all... and there is no way of telling what type of tune it was given. every chip saurus make would be different.

Thats exactly what i was thinking, if its been fine for 9years it should be ok, i just wont be turning the boost up at all with this ecu, its currently running 0.5bar from what my greddy gauge is telling me, i may decided to buy a stock ecu in the future just to be on the safe side, at least then i could run a little more boost and not have to worry about it not being "safe".

Anyone have any ideas why both 02 sensors are disconnected?

[STATUS]

Thats exactly what i was thinking, if its been fine for 9years it should be ok, i just wont be turning the boost up at all with this ecu, its currently running 0.5bar from what my greddy gauge is telling me, i may decided to buy a stock ecu in the future just to be on the safe side, at least then i could run a little more boost and not have to worry about it not being "safe".

Anyone have any ideas why both 02 sensors are disconnected?

if they tuned the cruise etc and so forth thy may have turned the 02 feedback off, a properly tuned ecu can return jus as good economy, theonly other optio is that they are shagged and causing the idle to stumble etc..

i quite recently had a V-spec GTR in with a Mines chipped ecu and it was tuned 99% perfect... i was floored as many ive had over the years seemed to just have bulk loaded maps but this thing pulled 260+kw off the bat and had the timing map done spot on.... the only issue was it was a bit rich from 5500 to redline 10.8 so i leaned it off up top and it made the similar peak (about 3-6 more) but at redline made 10rwkw more and a bit more torque.

the limiter was alo set at 8800

other than that it was possibly the best "chipped" ecu id ever seen. I ended up not charging for a tune and only a touch up.

NIZMO_FREEK go to someone who remaps facory ECU's, that way they can view the BIN file and compare it to ones thay have done and to the std BIN file. NISTUNE and DATASCAN can view these bin files.

Edited January 5, 2009 by URAS

[nizmo_freek]

if they tuned the cruise etc and so forth thy may have turned the 02 feedback off, a properly tuned ecu can return jus as good economy, theonly other optio is that they are shagged and causing the idle to stumble etc..

i quite recently had a V-spec GTR in with a Mines chipped ecu and it was tuned 99% perfect... i was floored as many ive had over the years seemed to just have bulk loaded maps but this thing pulled 260+kw off the bat and had the timing map done spot on.... the only issue was it was a bit rich from 5500 to redline 10.8 so i leaned it off up top and it made the same peak but at redline made 10rwkw more and a bit more torque.

the limiter was alo set at 8800

other than that it was possibly the best "chipped" ecu id ever seen. I ended up not charging for a tune and only a touch up.

NIZMO_FREEK go to someone who remaps facory ECU's, that way they can view the BIN file and compare it to ones thay have done and to the std BIN file. NISTUNE and DATASCAN can view these bin files.

Thanks for the advice, the only people that remap factory ecu's are a long long drive away from me so i dont think i will be doing that, might just possibly take it for a dyno run and see what the a/f ratios are at the moment, im kinda leaning towards buying a stock ecu at the moment just to be 100% sure its running safe, do you think this would be a worthwhile idea? or would i be wasting me time.

However the car does go very very well how it is at the moment, better than i expected it to go even thought its only on 0.5bar, im a bit hesitant to turn the boost up at all with this ecu though, just to be on the safe side i think i will leave the boost were it is now untill or if i decide to get a stock ecu.

Cheers

[STATUS]

im happy to have a look at the bin's if you can send it over.

[Beer Baron]

im happy to have a look at the bin's if you can send it over.

take the offer!! it's a 10 min job to remove ecu. pop it in an express post satchel with a self addressed one inside and your in business. that way you'll know where you're at, and if it has a stupid high rev limit as many japanese chips do then you can get it set to something sensible (ie under 8,000).

[nizmo_freek]

im happy to have a look at the bin's if you can send it over.

Thanks for the offer , might take you up on that sometime soon, will get in contact with you if i decided to.

Cheers mate