Mapping results

[G@NDY]

Had the FC at WGT today, and thought I would post the graph up. I was absolutley cacking myself as my luck with motors is very bad. So I asked Pip to map very conservative and it made 335fwhp at 12psi.
Found out that my exhaust is to restrictive so thats next on the list.

Would do you think? (engine is a half bridge with T78)

[m1tch]

Hmm I would have expected more from a T78 on a bridgeport, Profs engine is making that on a hybrid OEM turbo running maybe a bar on a streetport etc

[Ed_RX7]

Thats what i was thinking

[G@NDY]

Yep, more work needed !

[m1tch]

What were the AFRs? It might be lower on power if its running really rich lol

[G@NDY]

On boost it was around 10-10.5 running richer that fiddy cent

[turbotoaster]

eeek why does he need to run it that rich for such a low boost, really should be around 11-11.2

Do you have a graph with the afr on as ive not seen great fueling results in the past from him

[m1tch]

I can beat you on that, mine drops to below the scale in the car lol so around 8:1 lol need to get the e-manage plugged in and wired to the wideband O2 so it can map itself

[Prof]

Hmm I would have expected more from a T78 on a bridgeport, Profs engine is making that on a hybrid OEM turbo running maybe a bar on a streetport etc

Made 318 flywheel at 12psi on the hyrbid - that\'s with the stock 550\'s in !
 
I\'d say it would have a lot more power and torque if some of the richness was taken out - AFR of 11\'s are plenty safe The main thing is retarding the ignition before the peak torque point and then bringing it back slightly after.
 
Still decent enough looking graphs - no weirdness to worry about

[gillard28]

tbh saying 10.5:1 dont really say much. is that a peak tq figure or an over trim ?
 
as to 8:1 i presume ur running nitrous and a serious ign as the stock set up wont ignite that rich on boost.

[pdtaylor18]

I thought that anything below 11 AFR is just wasting fuel and would have thought that 11.5 would be around the minimum. I can not believe that PIP would even class 10-10.5 as conservative?? seems you are wasting a lot of power somewhere and the AFR is certainly rich enough to lose it there.

16 - 17 lean best economy
14.7  stoich, cleanest emissions
13.3  approximate lean best power
12.2  approximate best power
11.5  approximate rich best power

[shaunwil]

Could purely be the exhaust system. What system is installed ?

Shaun

[turbotoaster]

to make that much of a difference id expect he would be running a 2.5in exhaust, theres guys on here making more power on a stock port with stock twins at the same boost

[G@NDY]

Its purely down to exhaust its a 2.5 inch system with 3 silencers. Ooops my fault didnt want to upset the neighbours

[pdtaylor18]

Shame on you !! You can\'t keep a rotary quiet you know......LOUD and PROUD

On the other note of AFR\'s then how much would a 3" system affect them? Would it?

Just thought that having a AFR of 10-10.5 is just too low, that would just cause a lot of carbon to build up inside.