Loss in acceleration + throttle response ??

DIGItonium

[OT]
Anybody play with the Boss 302? That's probably my favorite over the GT500.
[/OT]

__________________

m4a1mustang

I haven't driven one yet but I hear they are pretty sweet.

__________________
- Steve

Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!)
LIKE us on Facebook!

Daishi

thx! i got a new pulley on it and tune.. I may get it dyno tuned at JDM though. Cuz the pulley came with its own tune maybe i can get some more power with a custom dyno tune.

__________________
Cobb Tuned | Injen Intakes | Fast Intentions Long Tube Headers | Fast Intentions TDX Catback 18" Resonators CF Mufflers | Tommy Kaira Hebi Bebi Shift Knob | 19x9.5/19x10.5 Five Axis Design S5:F w/ 245/40/19 - 285/35/19 Hankook Ventus V12's

DIGItonium

Lately I've been in the habit of getting the car moving from really low revs. Every once in awhile I notice once I get it moving at low revs and quickly give it more throttle, the car hangs and takes awhile to rev up to 4k. I literally floor it, and it makes no difference. This is a turbo car now, and it's not enough to get into boost! It really feels like VDC cutting throttle. If I get the car moving at higher revs (2-3k), it takes off much quicker and a bit more aggressive.

__________________

Specialk84

I've had my 370 for just under a year now with 13k miles and noticed the same thing but at higher rpms in 5 or 6 gears, usually when the car is warm. I installed a Stillen gen 3 long tube intake a couple months ago and the car runs smoother but same issue every now and then. It feels like the car wants to go faster but doesn't and produces a smell if I push it. I noticed it on the way home from work the other day in 5th gear where I usually have the most torque. I've reset the ecu once since owning it.

Specialk84

I noticed the exact same thing when going from shell to techron, never again

Beastmode

I've been dealing with this situation ever since I purchased my Z back in June of this year. My car is bone stock and has had one oil change so far but I noticed the delayed throttle response/loss of acceleration about a week after I got it and has continued to do it up until now. It typically does this when the car is warmed up (oil temp 230-240), but I'm really surprised no one has determined the cause of this yet! I'm taking the Z into Nissan tomorrow to have them investigate this problem so hopefully I can get some sort of answer..

Beastmode

DIGItonium

So far I believe it is already known that the ECU starts holding back power when the oil temps go beyond 200F. I just hate it when the car ramps up slowly in 1st every once in awhile regardless of oil temps.

__________________

Beastmode

Ahhh alright, I must have missed that. I thought I read the entire thread lol. So would you say an oil cooler is a necessity if I live in Phoenix, Arizona? I can't take it when my car starts to do that, which is almost every day. My average oil temps are 220-230F

DIGItonium

Wow... this summer has been one of the hottest, and I've never exceeded 220F.

I have the oil cooler and twin turbo, and it still feels like the throttle doesn't want to open up fully or quickly enough after things heat up for awhile. It gets to the point my car boosts later than usual or I can't get the turbos spooling. It's a different feeling when things are still cool... the car is rev happy, and I can get boost in 3rd at low speeds.

So has anyone monitored or logged the actual throttle position? I have the UpRev cable, but not the software.

__________________

IcedZ

Definitely take it in. They likely wont' do anything (ECU reflash if you're LUCKY, but that probably won't fix it). But they need to know about it. If this ever gets resolved, I'll buy another one =)

Beastmode

I'm gonna do my best to make sure everyone that needs to know at Nissan hears what I have to say. It's unfair that I have to deal with an ECU that puts my car in limp mode purely from daily driving. Hopefully when this is all said and done... OIL COOLERS FOR EVERYONE!

Beastmode

Just picked my car up from the dealership after an oil change and maintenance check up. I drove across the street to Wendy's and my clutch won't come back up after I press it down to put it in gear.... WTF! Dealership is about to come pick my car up and tow it back so they can see what's going on. My car has 10,600 miles on it. Anyone know what this could be? They also said that the delayed throttle response is due to the ECU and that's just how it's programmed. Not much help

DIGItonium

Master and/or CSC failure... had mine replaced as well. Master tech also says it has to be ECU programming and mentions emissions compliance. It pretty much kills the fun factor.

__________________

Beastmode

Thanks Digi. I'm pretty bummed about this whole situation. I really want to bring this situation up to Nissan, but at this point it seems as though you guys have been at this for a while with no results. Should I just get an oil cooler? This clutch issue caught me way off guard though, just icing on the cake I guess.