I just went in this morning and had my car redynoed with the TS reflash. Man, I was really ****ed. The car had not make any power, but lost power & torque. What freakin gives? I had the car dynoed in the hot summer with ambient temp. at 80 degrees & humid and put down 202.8 h.p. & 220.2 tq. Now in winter with ambient temp at 50 degrees in shop it laid down 198.9 h.p.& 217.1 tq. My automatic 02 Max has Injen cai , UR pulley , Frankencar exhaust with both dynos. air/fuel ratio was o.k. and we even checked the plugs which were great. I only have 33k on my Max. and it is in excellent running condition, at least I thought. Only thing I can think of was 2 weeks ago I had my crank position sensor replaced. (recall) Even manual shifting the car at the 7100 rpm redline didn't yield any significant increases, actually lost more , but I guess that was from heat soak. Any suggestions?? how do I post dyno pics??

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someone is going to have to host the pics for you. Did you use the same dyno both times (before and after)? I would be interested to see how your dyno curves look like.

wasn't there also a certain way to reset the computer after the TS ECU install? Its on their website for the 350z guys.

 

sorry to hear that bro....does the car pull faster/harder- perhaps your powerband is beefier
across the powerband as opposed to peakier at some rpms-

actually even so those numbers seem too low

what I did was use my digicam to take pic of dyno chart and then put in my car domain site

 

Also, anybody know if Nissan flashes the ECU for the CPS recall?

 

Its on my pictures file but I cant seem to upload images. The car still shifts at 7100 . doesn't that mean the flash is still working?

 

At least that part, but some have suspected that a Nissan flash may not 100% overwrite.

I'm just trying to eliminate some possibilities first.

Did you get any of the 7100rpm runs on disk?

 

my car stock put out as much as it did now. it lost all hp all around . I got Icey2k to post my pics . I still cant see the image for myself on forum though. I guess I will be calling Danny at TS to try and figure this out.

 

I didn't have the dyno run @7100 superimposed with the other runs. 3 runs on one sheet is confusing to look at. , but I can go back down there tommorrow and get it printed. the hp was 192 I guess the car got pretty hot.

 

Can anyone ELSE see the dyno?

I'm wondering if summer vs. winter gas, correction factor, or something is making your car sick. At least I hope it's something like that.

The BEFORE dyno is kind of jagged, but the AFTER is pretty smooth. It could just be the "smooth factor" the dyno guy chose, but that looks funny to me.

 

Thanks...I'd really like to see what happens to the VQ35 powerband from 6600-7100rpm if possible.

 

I will go and get the 7100 rpm pull and email to you. like before. I am going to call dealer to see if ecu had been updated with the recall. Hopefully it did. TS would take care of it if it was a reflash by dealer problem.

 

You said you tested it in the summer, and now it's not performing?

Winter Gas???

 

i cant see anything!

 

I cant see the dynos! Im really sorry to hear that man. Hopefully nissan messed with your ecu or something else went wrong thats no fault of TS. I doubt winter gas could make that much difference. Your running 93 octane i assume since your not in cali. Could add some toluene to see if that did anything but i doubt it makes much difference unless you got some incredibly ****ty gas or put in 87 or something. Good luck...hope you get this figured out.

 

Can you guys see it NOW?!?!?

 

Yup...thanks Ice

 

That's funny you started this thread....because last month 2 org members (that have the Technosquare ECU) and i went to the dyno. One car didn't go, but the other car did and to all our surprise my (bone stock) car had higher numbers than his. His car had intake, muffler and ecu. We concluded that something might be wrong with his car....before he layed down stronger numbers, but now with this. Hmmm....maybe the ecu doesn't work as well as had been said. Has anyone actually seen an increase? Do you think their numbers were only on stock maximas?

 

This might be a dumb question but when TS reflashes your ecu do they account for what mods you have or do they just have one map for stock cars? I remember after dyno tunning my friends wrx, he later did i few mods and it wasnt working right until he had it retunned. Just a thought..

 

Dude there is definitly something not right past 4500 RPM!
Forget 7100 redline your not making adequate power no where near there...

This is what my dyno last month was w/ Franken/Budget B (i was severely overdue for maintenance: oil change/fuel injector service/throtle body)

http://images.cardomain.com/member_i...63_71_full.jpg

 

4 months between dyno runs doesn't help anything out either. It will only add to the controversy.

 

The new CPS recall absolutely does NOT have a reflash of the ECU!

 

Thanks...that eliminates that possibility, however I wonder if the "new" sensor could cause power loss somehow.

 

They have pretty specific flashes...and that is just for auto/manual, different packages you might have on the car...etc. For mine, I had them flash with more fuel and higher timing due to certain new parts I was putting on.

 

quangsung's car has a failed VIS and here's the dyno chart with both our numbers- Dennis is moreheavily modded (ypipe/UDP/ Bpipe/Intake)
http://images.cardomain.com/member_i...63_69_full.jpg

 

that is weird becuase when i went and dynoed after they flashed my car it got about 210 hp and that was stock with just the ecu. but that was not on a dynojet. you have to remember that there are so many factors in dynoing. like what gear u stared in, how much psi was in your tires and such. the lower the psi the lower the hp. the higher the psi your hp will increase.

 

he should be well near 230+ wtq with the mods he has w/out the ecu upgrade-

Kloogy's auto is puttin 230 wtq and he has less mods than jeromes car

 

hehe.. just noticed

 

thats what im saying there is something wrong or teh people who dynoed your car are stupid and dont know how to do it correctly. im like 100% sure that the ecu didnt cause your hp or tq to go down. my dynoing my car soon so i will post when i get the results

 

After thinking about this some, I think you need to go to ANOTHER dyno shop, PREFERABLY a DynoJet.

Is that possible?

 

I though his was a dynojet- the org should ban the posting of any non-dynojet
dyno's

 

I guess I could. I called and talked to a friend that works at the dealership were I had the cps done he said that they do reflash the computer. The cps upgrade has something to do with people having problems with theire catylitic converters prematurely wearing out. go figure. I guess I will send Ecu back out to TS to have reflashed. and hopefully thats it. and then redyno , maybe somere else. I sent the other dyno Ice hope you got it. will keep you posted.

 

i hope the fix is a non issue- i would love to see that this ecu is worth it....as
i was planning to take a week vacation for this (most likely my last mod)

 

Maybe it is...just making sure the OTHER one he goes to is for comparison sake to other peoples numbers.

 

Hmmmnnn....http://www.infinitihelp.com/Nissan/N...ne%20Recal.htm

 

all I got to say is that I hoped TS shipped ky jelly with those ECU's.....

$500 seems a bit steep for a 7100 RPM redline w/o power gain (actually a power loss)

 

maybe the UDP caused sensor to go - cause his stock dyno is on the average

 

I think Winter gas refers to gas stations using lower octane gas because the temperature outside is lower and less chance of knocking happen.

How long ago was the ecu reflashed?

It could be the dyno too.

 

IIRC...winter gas contains more alcohol(cleaner burning), since the knock threshold is lowered by the colder temps but you lose around 1-octane point AND it doesn't have BTU(calorie?) power gas does.

At least that's what I've heard/read.

 

So which one is it?

 

Jury is still out, however I've painfully learned DAVEB is rarely mistaken.