TECHNO SQUARE ECU DYNO (lost power!)

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Jan 8, 2004 | 04:11 PM

#41

Maksim2000

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Interesting... It dips where it used to bump around 4700 rpm ...

I don't think dyno type really matters as long as both runs are done on the same dyno, but are the graphs SAE corrected ?

Jan 8, 2004 | 09:06 PM

#42

jerome johnson

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Quote:

Originally Posted by IceY2K1

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

Is that possible?

yeah, It was a dynojet 238c Well, anyways I called Danny at TS . He said he would reflash ecu, no problem. I will redyno next week and see.

Jan 8, 2004 | 09:15 PM

#43

jerome johnson

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[QUOTE=spanishrice]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.[/QUO I thought you always stayed with the same dyno due to the fact there are variances in every dyno. This was a dynojet dyno. dealer had reflashed an upgrade last week. I noticed car felt a little sluggish. which had me concerned. I guess it would be advisable to have recall done befor TS flash.

Jan 8, 2004 | 09:19 PM

#44

KLOOGY

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Quote:

Originally Posted by MannyNJ2k2max

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

Thats a real low number Jerome put down. I actually drove Krmaxima's car, after he had the TS ECU done, and it felt pretty strong for a stock auto. Only thing Jerome has that I dont is the UDP. Not sure what those are worth. I think that the dealers flash, has to be the source of your low numbers. Lets hope it is.....

Jan 8, 2004 | 09:23 PM

#45

DAVEB

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Quote:

Originally Posted by BiggD23

So which one is it?

Before I made that statement, I read the recall which makes no mention of a re-flash, I then spoke with our most experienced service advisor (who has an '03 Maxima and a 350Z himself and is a total motorhead) After that, I checked with two Nissan Master Techs (who get paid more if a re-flash is done), they assured me that the CPS recall really does NOT re-flash the ECU. Of course, if there are other codes present, a re-flash may be needed, but NOT for the basic CPS recall.

Jan 8, 2004 | 09:26 PM

#46

jerome johnson

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Quote:

Originally Posted by kloogy

was wondering also. When my car was completly stock hp was 195 whp. and 224 tq. Is that normal for automatic. After intake pulley and exhaust I only got up to 202 hp and 226 tq. is my car sick or what? stock ecu at the

time

Jan 8, 2004 | 10:14 PM

#47

LithiuMax

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Jan 9, 2004 | 12:00 AM

#48

krmaxima

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your stock seem normal for an auto. anywhere 190-205 is good anything less is bad u also have to consider is your air filter clean,what about your oil?? also every dyno's are different.

Jan 9, 2004 | 06:23 AM

#49

Blu

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Quote:

Originally Posted by MannyNJ2k2max

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

Did he ever get the problem sorted out? Also what are his SAE numbers? STD inflates the number quite a bit.

Jan 9, 2004 | 07:01 AM

#50

MannyNJ2k2max

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Quote:

Originally Posted by blubyu2k2

Did he ever get the problem sorted out? Also what are his SAE numbers? STD inflates the number quite a bit.

he should be handing it over to the dealer anytime now- they agreed to take a look at the car finally after the holidays-

dunno if he was able to remove his UDP though since he didnt have his stock one-

Jan 9, 2004 | 07:04 AM

#51

MannyNJ2k2max

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being that both quangsung's and jeromes cars have
a similar dip on the dynos- I'm wondering if maybe both are suffering from either VIS or Crank sensor
problems- they both have UDP's (dunno if its relative) but go figure....

Jan 9, 2004 | 10:47 AM

#52

IceY2K1

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DAVE,

They probably updated something else or reset his ECU even though the recall doesn't ask for it. I'm betting his car had all the "learning" coefficients reset by the Consult and that's why it's a slug after they returned the car.

Same thing happened to mine after the Fuel Cut TSB.

Quote:

Originally Posted by DAVEB

Jan 9, 2004 | 03:01 PM

#53

2k3TitaniumSe

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That sux!!!!

Jan 11, 2004 | 11:27 PM

#54

looslip

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Any updates on what happened here? I really want a TS ECU but this is a potential show-stopper for me.....

Jan 12, 2004 | 10:05 AM

#55

jerome johnson

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Quote:

Originally Posted by looslip

Any updates on what happened here? I really want a TS ECU but this is a potential show-stopper for me.....

Update is that TS should be getting ecu today. I should hopefully get it tommorrow befor I go in to work. Man, 2nd shift sucks! Drive the car easy for about 2-3 days so ecu can set itself. Hopefully Friday morning I will have it redynoed.

Jan 16, 2004 | 10:45 AM

#56

jerome johnson

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Quote:

Originally Posted by jerome johnson

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??

[Edit]

[/Edit]

Got car redynoed and still sucks!!! I got the ecu back Tuesday after having the ecu reflashed a 2nd time. ( no charge) drove car 2 days easy for 130 mi. and today all I got was 196.3 hp & 222.3 tq. the air/fuel ratio is way lean at 6500 rpm. what gives? Ice if you can post dyos I would appreciate it. I am still having troubles uploading.

Jan 16, 2004 | 10:59 AM

#57

IceY2K1

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Jan 16, 2004 | 11:00 AM

#58

IceY2K1

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Your car is sick! Something is wrong.

Jan 16, 2004 | 11:05 AM

#59

IceY2K1

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Are you dynoing in 3rd gear?

Jan 16, 2004 | 11:54 AM

#60

ripper

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The pics are working.

Jan 16, 2004 | 12:00 PM

#61

MannyNJ2k2max

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Quote:

Originally Posted by IceY2K1

Your car is sick! Something is wrong.

VIS or Crank sensor prbs...

Jan 16, 2004 | 01:08 PM

#62

IceY2K1

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Compared to other VQ35 dynos, I'd suspect the VIS, however maybe Nissan messed up on the CS recall.

Honestly, if it was me, I'd have TS reflash my STOCK ECU data, and perform another dyno(sorry!).

Either:
A)TS software is not working as expected
or
B)Sick max with maybe bad/improperly installed CS.

Definitely SOMETHING going on IMO, but the only way I can figure out if it's A) or B) is to redyno with STOCK ECU data. If it's still low, I'd suspect the CS or another malfunction. If the dyno improves, TS software.

Any other ideas?

Quote:

Originally Posted by MannyNJ2k2max

VIS or Crank sensor prbs...

Jan 16, 2004 | 08:54 PM

#63

jerome johnson

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Quote:

Originally Posted by IceY2K1

Are you dynoing in 3rd gear?

I am not sure if it were in 3rd its an automatic by the way. What is this Vis problem that everone suggest might be the problem? Danny at TS seems to think it might be the valve on the intake runner not opening all the way or prematurely closing at the higher rpms. I checked the actuator ( the little mechinism on left side of intake that has lever, it moved freelywhen pulling vacum but not sure if it does when running wot? or the solinoid to it is faulty. I read an old post that someone had the same problem but it was on an 2000 were no matter what mods they have done car would not increase in power output. I hope thats it I only have 3k miles left befor warranty is up.

Jan 16, 2004 | 11:42 PM

#64

krmaxima

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well u have to dyno in 3 gear to know your true hp i think the dyno guy messed up i would re dyno or go and ask. well keep us udated because for sure my ts ecu gave me power

Jan 17, 2004 | 12:30 AM

#65

IceY2K1

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If you can ask for the DynoJet Runviewer files to be put on a disk, you can figure it out by graphing hp/tq vs. mph.

Did you have the shifter in "3" or "D" during the runs?

I'm not up-to-date on how the VQ35 variable intake works, but the 2K-2K1 variable intake was faulty on at least MaxGators' car. He had very similar top-end power losses.

Quote:

Originally Posted by jerome johnson

Jan 17, 2004 | 07:19 AM

#66

Quicksilver

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WILLSE had to replace the gasket on his VIS due to failure (he drives a 2002 SE). It was definitely causing him some problems, but he still has more to solve.

Jan 17, 2004 | 12:57 PM

#67

subdocmax

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Lean ---- clean your injectors !!!!!!!!

Jan 17, 2004 | 04:42 PM

#68

jerome johnson

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Quote:

Originally Posted by IceY2K1

If you can ask for the DynoJet Runviewer files to be put on a disk, you can figure it out by graphing hp/tq vs. mph.

Did you have the shifter in "3" or "D" during the runs? it was manual shifted from 2-3 on one pull and on the other it was left in 3. they all looked the same

I'm not up-to-date on how the VQ35 variable intake works, but the 2K-2K1 variable intake was faulty on at least MaxGators' car. He had very similar top-end power losses.

checked my vis sensor actuator on intake this morning. It definitly works it moves when the rpms reach 2500. I guess that means its ok. I even went to dealership and looked at a 04 it does the same at the same rpm. I am thinking injectors may need professional cleaning since car goes lean at 6500 rpm.. I had Shell gasoline in car when dynoed 92 octane. Danny said Shell sucks in CA. Looked at 3 of the front plugs they were clean ,but a little whitish grey at the tip. Well, fresh out of ideas for know.

Jan 17, 2004 | 04:47 PM

#69

jerome johnson

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Quote:

Originally Posted by subdocmax

Lean ---- clean your injectors !!!!!!!!

I used the Lucas injector cleaner in a bottle 1 month ago. Is there another type of injector cleaner that will help? bottle in tank or having dealer do it.