dguzzardo22

iTrader: (1)

When driving I get a loss in power right before boost kicks in at 1-2 psi then the car starts to pull . Feels like it needs gas or is getting to much . Idk but u can feel the car fall on it's face untill it builds up a little more boost then it pulls till whatever psi then when I shift it dies for a sec then pulls .



Also another problem is when from a complete stop 1st gear does bot get boost it red lines before boost kicks in then shift to second it starts boost at around 35k to 4 rpms . Is this common ?

crush02342002

iTrader: (2)

tune and possible boost leaks..you should be building boost and reach full spool sooner than 4k. full spool should be (8psi) at around 35k with that turbo.

does the car stall out at anytime? have you gotten tuned?

dguzzardo22

iTrader: (1)

I really don't think I have any boost leaks but how can i pressurize the system threw the intake ? And no tune just the unichip that came with the turbonetics kit .

dguzzardo22

iTrader: (1)

No stall . Just takes a bit to spool the turbo

PeArLwHiTe07tC

iTrader: (2)

to me it sounds like u may have a lean spot in ur tune. do u have a wideband, and do u know what ur afr's look like when this happens?

Syldrin

iTrader: (1)

are you WoT or partial throttle when this happens?

trd07tc

iTrader: (-1)

you need a tune captain

where do you live

dguzzardo22

iTrader: (1)

Partial throttle . And no wideband . And I live in Louisiana by baton rouge . . But shouldn't the UNichip come pre tuned from the turbonetics already tuned ?

PeArLwHiTe07tC

iTrader: (2)

im not too familiar w the unichip. id assume it comes w a base map. general rule of thumb is no matter what management system ur runnin, ud still need it tuned. no 2 cars are the same, plus theres too many things to factor in such as climate, atmospheric pressure and so on and so forth. id contact them and see if they can be tuned by a professional tuner and go from there.

dguzzardo22

iTrader: (1)

Ok I'm gonna just do that bc it seems like a tuning issue . Thanks for all help !!

PeArLwHiTe07tC

iTrader: (2)

anytime. id also strongly advise u to invest in wideband gauge.

Syldrin

iTrader: (1)

partial throttle means your foot is not hammered all the way down. and if its happening at partial throttle it is because the unichip cannot tuned partial throttle and that means you are running to lean at that spot and you need to invest in an FiC or an ultimate.

dguzzardo22

iTrader: (1)

So I cannot tune the uni to partial throttle ? Bc if I can fine a buyer for it I'm surely gonna sell it .

Syldrin

iTrader: (1)

no the unichip can only tune WoT. i doubt you'd find a buyer. i know scionfred says you can just buy a split second fuel enricher to tune partial throttle on the unichip

ScionFred

iTrader: (1)

Since when does the Ultimate tune part throttle (closed loop) enrichment? The only way to do that is by modifying the primary oem WB O2 sensor signal to tell the ECU that the AFR is lean, making the ECU add extra fuel. The FIC does this but the Ultimate can't, AFAIK.

To the OP: You really need a wide band AFR gauge to see what's going on with your tune. Also a OBDII scan tool is required for any meaningful self-diagnostics. Otherwise you need to find a Unichip tuner or switch to the FIC and find a FIC tuner.

Syldrin

iTrader: (1)

actually fred now that you say that you're right the EMU doesnt tune closed loop. I dunno why i thought it did.

trd07tc

iTrader: (-1)

ultimate tunes part throttle when u unplug the primary o2

PeArLwHiTe07tC

iTrader: (2)

^^^yeah what he said

ScionFred

iTrader: (1)

You could do that with any piggyback including the Unichip. You'd have a permanent CEL and a static tune that would change with the weather and altitude but it is possible.

dj1010

Did you ever solve the issue or did you just change your management? I am curious because I am having the same problem so I am looking into getting an FIC and I wanna make sure that is the issue (all though I am pretty sure it is the unichip that is causing it since it seems like a problem with partial throttle tuning)