this is what i got..

04 lq4 w/ zo6 cam and springs.. 60lb siemens.. on a tbss mani.. w/ 80mm bbk.. turbo is a precision 68..

any input is appreciated..

http://www.youtube.com/watch?v=V8lXCvQNuTg

heres the problem though...

i pulled the bolt all the way back from the FPR.. once i add pressure... it bogs out and dies... starts at 25psi.. thats the min for the aeromotive fpr..

http://www.youtube.com/watch?v=uJYc7w28E60

 

What injectors are you running again? Are you sure that the injectors are scaled properly in the tune....?

 

the siemens derka mototron 60lb injectors..

i think thats where J fk'd up in the tune..

he told me hes set at 78.2 psi

to set the FPR at 58 psi

but its way!! to rich!!

 

Now are you sure the injectors you got are flowing 60# @ 58 PSI (4 BAR)? If not then thats your issue. They have the same injectos flowing 60# at different rail pressures..... 2,3,4 BAR

 

idk @ what BAR..

i put in a 2 bar map today.. the one from the 05 cobalt


ima check the serial # on the injectors tomorrow and check with siemens

 

Your fuel pressure needs to be at 58PSI. Who tuned it? You need to have your injector flow rate set properly also. Turning down the pressure is just removing fuel, and it should be removed in the tune not at the regulator. You should also reference the fuel pressure (run a vacuum hose to one side of the diaphragm for the regulator). I would hook up the pipe from the turbo before I ran it at all.

 

tuner: justin @ black bear

sent me a flashed pcm

...

yea im waiting to get the flange for the bov.. so i can run the last of the piping..


but it still doesnt make sense why the truck is bogging

 

dumb ? where is the part number on the injectors..

without takin the injectors from the rail.. i could see this number written on the back side of the injector

A047A04750

another one reads different

A047A04807

************************************************** ***********************************

why did justin at @ blackbear tell me to set my FPR @ 58psi w/ a 2-bar map sensor from a 2005 cobalt ??

************************************************** ****************************
im sure the injectors i have are the Deka lV which this is what they specify
60lb/h Siemens Deka 4 Mototron High Impedance (Long Style) EV1 Connector

Genuine Siemens / Mototron DEKA IV ( DEKA 4 ) High Impedance Injectors

These injectors flow 60 lbs/hr at 43.5 PSI ( 3 BAR ) and up to 85 lbs/hr at 87 PSI! In addition, these units are high-impedance. Despite the high flow rate, they are linear and controllable at low pulse widths and have been used in ULEV applications! This allows you to use a larger injector than normally possible without hurting idle and low speed driveability. Adding to the flexibility of application, these units are high-impedance; making them compatible with most ECUs, while delivering the most flow available in a High-Impedance injector.

These injectors are able to function at high fuel pressures and don’t exhibit the high fuel pressure handling problems found with many other high flow high-impedance injectors. This makes these injectors very well suited to turbocharged and supercharged applications that see high fuel system pressures.

Engine performance and running quality are enhanced through the optimized spray pattern. Unlike competitors “pencil stream” high flow injectors; these High Flow injectors utilize a multi-orifice tip providing a true 30 degree spray pattern for improved mixture preparation. This results in lower BSFC and better idle quality than many injectors with less flow.

The EV1 injector connector can be found on many older and late-model OEM applications such as the GM TBI, TPI, LT1, LT4, LS1, some LS2, some LS6 and most European applications. We also offer the same injector with the EV6 / USCAR connector as Part Number MOTR-04557. Buy only the injector with the connector you need and eliminate the need for in-line adapters or having to change the factory connectors!

Features:
Genuine, reliable Siemens Injectors
Excellent response characteristics
Robust Design
High Impedance
Low Impedance performance characteristics with High Impedance Compatibility

Specifications:
Coil Resistance: 12.5 Ohms / High Impedance / High-Z (No ECM driver modifications required)
Static Flow Rate @ 43.5PSI ( 300kPa ) w/Gas: 60 lb/hr = 630 cc/min = 453 g/min
Static Flow Rate @ 87PSI ( 600kPa ) w/Gas: 85.7 lb/hr = 900 cc/min = 648 g/min
Gain: 0.11ms/mg
Offset: 0.055ms
Turn on time @ 14VDC: 1.14ms
Turn off time: 0.85ms @ 600KPa
Connector: Bosch EV1
Series: DEKA 4 ( DEKA IV )
Orifice Type: Multi-orifice
Spray Pattern: 30 Degree Spray Cone
Factory fitted with Viton upper and lower o-rings

Equivalent Part Numbers:
Siemens FI114961 or 107-961 ( 107961 )
Mototron INJ-GAS-006 ( L107)
Accel 74620L
MSD / Edge 2030


************************************************** **************************************

 

You fuel pressure is 58psi or 4 bar. Your MAP sensor is for boost pressure of 14.7 (29.4 including NA pressure)or 2 bar. Your talking about fuel pressure and air pressure the 2 have nothing to do with each other.

 

figured exactly that after i posted this lol thanks

..

Justin fkd up on the tune.. i gotta get him to reflash it ..