After the self install (which spanned 6 days due to a missing air filter to turbo connection, ecu delivery, and a bent oil pan causing a leak) the car cranked and idled roughly due to the ecu learning the flash. went around the block and the car ran smoothley but didnt get into boost due to the oil leak discovery, after fixing the leak and installing my zeitronix, started her up again and i was seeing 14.7 afr and high -18s to high -19s in boost at idle, everything seemed right to me so again around the block. the car was running rough and stalling after i hit boost in third but not full throttle, so i look under the hood and the intercooler piping connection to the throttle body was loose so i tighten and start the car back up again, it runs alot smoother but still alot of vibration especially at idle. i do a third gear pull and the highest boost i see is 7.5-7.8 psi with afr's in the mid-12s to the mid-11s, i broke no traction with the vdc off and frankly the car doesnt feel that much quicker, so i assume there is an exhaust leak due to the somewhat low vacuum at idle the inability to hit a full 8psi of boost, last night i did my best to align all of the exhaust pipes within the v-bands and they are all dead on except for the u-pipe that connects the left header to the pipe with the Y on one end (exhaust collector for turbo), it is not completly flush with the Y-pipe but is off by the most 2mm. the only clamp i did not retighten was the one connecting the first downpipe to the second because i didnt think that it would cause a lack of boost and it seems to be flush. after retightening the clamps i started her up and she ran alot smoother at idle, almost like stock. i proceeded around the block again and this time in a third gear pull the highest boost i saw was 7.4psi and my afr's were steady at 13.1-.2 only dipping into the 12s when i would hit it from low rpm's. also when sitting with the car at idle there is a somewhat strong smell of gasoline coming from the engine bay as well as a vibration noise that someone described well in another thread, as if there was a baseball card stuck in the spokes of a bike to make that sort of tapping sound. a friend suspects that there might be a leak in the plenum somewhere and/or somethings up with the injectors, today i will be checking the plenum out, but other than that i am at a loss for what is causing my lean and underboost issue, any suggestions are greatly appreciated. if nothing remedies this condition a new flash or stage 1.5 is at the top of my list for options. thanks for reading.

 

I am sure the turbonetics owners will chime in really soon. It definately sounds like an install problem (boost leak).
edit never mind on the install quesiton just re-read your post.

 

Check your plenum with carb cleaner-if there is a leak your motor will rev up. Double check your injector o-rings too, they may be leaking fuel-hence the smell and running kinda lean. You must fix all exhaust leaks to geta proper WB reading so do that-2mm is a ton off for an exhaust pipe. Good luck

Edit-also check your boost line to make sure its not pinched and giving you false readings...

 

Sorry to hear about your issues....do you have any other mods?

 

Ditto on what Alberto said.

This is not a reflash related issue, but an install issue. The car shouldn't need any time to "relearn" a new flash. It won't start quite as smoothly as stock due to the fuel pump, but it should idle as smooth as stock.

 

when installing injectors I always like to lube the orings with dielectric silicone grease.......you use anything like that or oil? Sometimes there can be a leak there (yes, it's happened to me and others before) and that can cause some funky runnins.

 

all my problems have been solved, it did turn out to be the plenum. a friend who was helping with the install forgot to put the nut on the back side of the lower plenum causing a huge leak and the gas smell. the car runs like stock now and pulls very strong. through 4th gear i was hitting 9.5 psi. the rattle that i mentioned was due to plastic washer on the O2 sensor plug melting and letting the nut rattle itself off, it scared the ish out of me because the sound of the exhaust leaking right out of the header was loud as hell. everything is stock and im not having that much trouble with traction. hopefully i can get on a dyno tommorow or the day after, i will post the results.

 

Wow I think your the first otherwise stock TN car with an overboost issue, you should be seeing 8-8.5psi, congrats now you get to take it all apart again to fix it

 

9.5 psi is not normal.... what is your AFR?

Respect
JET

 

He never said if he had a stock exhaust or not. With an exhaust such as the Nismo or Fujitsubo you should be close to 9.5psi based on it being a more free flowing exhaust. The wastegate is still controlling boost, otherwise he'd be at 11-12psi... so this is *NOT* the same problem as the "uncontrollable boost" issue.

And once again, hitting higher boost doesn't mean his AFR's will be off. The overboosting on this kit is a purely mechanical issue that has nothing to do with the ECU and the way that it adjusts for AFR.

 

Congrats! Good to hear you worked everything out. We should meet up some time. My car is currently at SGP, but I fly out there on 02/17 to drive it back home. Enjoy your new power, but be safe.

 

I hit 9.5 at times with my stock exhaust.. Put on my fuji.. and the psi never increased!

 

That's interesting. So far all the stock exhaust setups I've seen have been under 9psi.

 

even though im hitting 9.5psi the ecu is adjusting and my afr's are perfect low to mid 11's throughout boost so im not that worried, but as soon as i see something fishy its off the gas for me. i cant wait for stage 1.5, just to have that extra sense of security and the ability to squeeze out the most hp on the stock block. Gman i would love to meet up, from what i've read on here your car should be a monster. im going to start a new thread when i get dyno'd so ill keep all you guys posted.

 

Yep, as stated the boost issue should have little impact on your AFR. Glad it's working out for you.

 

Maybe the boost guage is off?

Not really relavent to this topic, but I know my E-01 will say that I spike to 10psi or so when i'm set at 8psi, but even when I log a run through the EU it never spikes above 8.5 or so and stays a steady 7.5-8psi the rest of the run.

 

That is a good point. If its a mechanical or even some electronic boost gauges there is a variance in absolute and displayed pressure.