Well Cossie friends, I would like to hear from guys what you would recommend as the next step for my Cossie?

I have a Sierra Cossie, 205 block YB engine, 380 hp chip from Stu (MSD) on L6, t34.55, uprated t34 actuator, Deka 55 lbs, 3 bar map, Bosch 044 (Rewired), Ford 071, Cosworth HT lead set, Ford RS Cosworth & Turbo uprated Ignition Coil (GPA), RS 500 style intercooler, Group A head gasket, AP Racing Group N 3 plated clutch, FuelLab fuel pressure valve, K/N airfilter, GGR Silicon hoses, Group A air intake system, Group A cooling system, Group N bushings, Rustfree oil reservoir oil breathing system etc.

If I want to get more be quicker/faster acceleration/more power, and use as many parts in my setup as possible (as they are all new...) what could I do?

- Can I raise the boost? The chip is setup for 32 psi, I am running the car at 32 to 34 psi but few sec after it drops to appr. 25 to 27 psi, which is normal for the t34.
What can the YB engines take in boost? If the head gasket blows, cant I use ARP bolts or similar and boost more?

- Bigger turbine?

- Lower diff ratio? I have Supra 3,9:1 diff ready for install and will use Toyo R888 tires.

- Anything else you can think off?

Any good advices or tips greatly appreciated!

 

GT3071/Map-Chip, job done........

 

Ok, thanks. Keep everything else? Same injectors, map etc..?
Have you map/chip for this setup?
What power ratio could I expect from this change?

 

55lb Injectors are good for around 450bhp or alittle more, maybe you could think of Siemens 72, or 83lb Injectors..

Head Gasket too may ned to be changed for a WRC TYPE one, Mountune, 205 Block again should be ok, i ran 450bhp with 2.3bar on a 205 Block and it was ok.

As for a Chip, speak to MSD...you,ll need one for change of Turbo, injectors...

 

I wouldn't raise your boost much higher either on your T34, you'd not notice alot of difference and your Turbo will start to struggle, 32 psi is a good place on the T34, you could change your housing to a .63, to give abit more top-end, BUT IMO if you can afford it then go GT3071...

 

Fully agreed but if you do go to the trouble of the 3071 then id change the inlet cam also and go for the 83lbers and a wrc hg for sure,then 2.5 bar and wait for the block to crack then put it all into a long studed 200 block..
If your going to go further i wouldnt do n of the shelf chip..get it live mapped..


cheers danny