I am wondering if I have enough fuel for my setup. My EUGO (sp?) **** on me so I have to wait and get a new sensor. Here is my setup:

S5 NA block
TII rotor housings
Big streetport, ~12"Hg @800rpm
550ccx4
Hotwired FD pump
5.5psi (probably creep to ~7)
S5 TII intakes
Stock TMIC
Stock TII ECU/sensors

Other stuff:

TID mod
3" DP, 2.5" single
S5 turbo, slightly ported wastegate
800 miles on the engine. Used side/corner seals, RA basic rebuild. Used housings.

I appreciate all the input, thanks.

 

Probably not but its fruitless to speculate. Get your wideband fixed....

Even better, get rid of that POS UEGO and get a PLX or Innovate. The Uego tested at the bottom of the barrel in comparison.

 

Too late, I already have the UEGO setup. I was satisfied with it when it worked before, the connector was damaged during the engine removal.

I'll probably get the sensor or just buy some 720s and throw them in the secondaries.

 

I have never tried the NA>S5 turbo conversion. What did you modify to keep the 8.25psi turbo wastegate down to 5.5psi?

You are going to need some type of fuel computer for that engine, especially if you use something other than the 550cc fuel injectors.

The PLX and Innovative products are all designed for the Bosch LSU 4.2 UEGO sensor as far as I know.

+1

 

Innovative does use the Bosch sensor. The common ones are the 7057 and the 7200.

 

It has an S4 wastegate actuator which I believe is rated to ~5-6psi without the boost control solenoid or whatever. I don't think I need a fuel computer since I ran the car for about 5000 miles on this setup before the engine blew and the AFRs were in the 10s at WOT full boost. It doesn't make as much power as it could but I am fine with that.

 

http://www.innovatemotorsports.com/r...B_Shootout.pdf

Here are the results and I spoke too soon.. The AEM tested near the top of the pile

 

So I got a wideband and the AFRs are in the 10s and 11s at WOT. Is it safe to leave my fuel setup alone or is it possible that the injectors are being run at high duty cycles to achieve the AFRs?