Hi,
With my current setup im running 18psi and producing 240bhp (195whp). My car is tuned rough and im sure even with just a good tune on my setup I could get an extra 30bhp out of it.

But come this winter I will be putting the car off the road again and doing a full rebuild. I considered wiseco pistons and Eagle rods with strenghtening as my main focus. Then after that I was going to invest into a better turbo than the T28 I currently have.

I would prefer a roller bearing turbo maybe something like the GT2860rs or GT2871R.

Can you get 30psi from these sorts of turbos and if so firstly would the engine take it with the said strengthening and a proper tune and if so what would be the expected (Approx BHP) or what would the max boost be?

Cue the Slateing

 

 

18psi and only 195whp? Are you ******* serious?

 

 

Ye totally. MS tuning over here is much harder to find and so I went to a local rally centre and they had done some MS stuff but mainly Normally aspirated. I was dissapointed to. I expected about 240whp from my setup and fell way short. Thats running MBC and not EBC as I still cant get the damn thing to work (Another story).

What should 18psi give around 240whp?

 

Post up your tune. Unless the car is running on 2 cylinders the map must be in the negative timing wise in boost to produce such pathetic results

 

This is going to sound like a NOOB thing to say but here goes.....What do you mean post up my tune? Do I need to do a log as I run the car etc?

 

You should have a .msq file on your computer that contains your tune. You can upload it to the site so others can look it over. I'm betting your timing map is very conservative, you can get some huge gains from a few degrees of timing advance.

 

 

make that 17psi sorry.

 

I believe 18psi wants to know what changes to your air/fuel/timing etc you've made.

 

Thanks.

I dont have the laptop with me. I will get it tomorrow and see if I can get the msq file then upload it.

 

What boost are you running psdexta to get your power?

 

I was making 263whp on 14psi with my t28. With 2.5" exhaust....

 

350BHP = approx 295whp. To do that on a 1.6L, you need something like a GT2871R and run 18-20PSI.

 

man - THAT was the movie (j/k) - Scanners

 

My maps must be really bad if 14psi gives 263whp. That's almost 70whp more than me running 3-4 psi more.

 

At best you're seeing 15psi at redline - better boost control would help a lot. Looking at the graphs, you're either using a crap EBC or a hotside-sourced MBC. Switch to a good EBC valve/controller or a colside-sourced MBC.

Very low torque at low RPM. Like, REALLY low. 180ft.lbs at 4k is pathetic, especially for an ARtech setup. Is it an eBay T25?

11.0:1 is too rich across the board. There are sections where it's dipping down to 10.8:1. Way too rich, and the tuner should have figured this out. There's 10whp in the fuel map alone.

Post the MSQ so we can see the timing map. Assuming the turbo is chinese, there's probably about 50whp to be found in your setup between better boost control and spark/fuel tuning, but beyond that you need to switch to a genuine Garrett or Borg unit. falcon is correct - 300whp from a 1.6 is a 2871R at around 20psi on pump gas.

 

OP, to put in in perspective, I made 190whp on a tiny Greddy TD04 peaking at 12PSI and tapering to 10PSI at redline. Your set up as-is is leaving a lot on the table. Proper boost control and a tuner who knows what he is doing should get quite a bit of power. I found on my turbo set up, the motor liked it the best around 11.6-11.7AFR ish. With the Rotrex though, it's a different story.

Still in for hearing what turbo it is.

 

I'm pretty sure the first thing you need to do is perform an animal sacrifice on top of the valve cover. Something small will suffice, like a baby rabbit.