confused with hsf pcb
 

Hello
I am a little confused with pcb solderind pads to run x1.5 idc or maybe more (engine setup below)
https://farm5.staticflickr.com/4373/...48ca94cb_z.jpg
picture taken from this forum but I havethis type of board with no marks like on this one
http://i.imgur.com/OgDpY6Q.jpg

The second is- I am running 3 (1000cc) jets and user manual suggest to solder 1-2-3 pads to 2-3 is it corect because manual section has doubled chapter #6 but it is pionted on chapter7.
Setup is
nissan rb26 with 3.4 strocker kit
efr9174
2200 bosch injectors
at 1.2 bar I have 525 whp and only 48%idc on pump gas

Re: confused with hsf pcb
 

I suggest using the x1.5 + the "GAIN" trimmer. Ideally using x2.25 (available on V3.1)

Re: confused with hsf pcb
 

Solved, this board revision has a jumpers set on opposite
did x1.5 and pad 2-3 solder for 3 jets, seems it flows reasonably
but see no power gain((
tested at mustang dyno
started at 1.2 bar with gas afr 11.5 , injecting pure ethanol (96% grade) went to 10.5
pulled -10 to 17% of fuel to match11.5 gas afr and no power gain(((
added 3-4*, got +10 whp an average, added 5* no luck
total timing 18 to 24* with wmi active

Re: confused with hsf pcb
 

try adding boost

Re: confused with hsf pcb
 

I did, at 1.4 it made 595 with injection and neraly the same 580 or so on pump gas ron98
I noticed power gain on afr12 ,550@1.2 during pump gas run
Going to test afr 12 with injection but I`ll have to remove 20-22% of fuel and true gas afr make me scare
the jets are 3 x 1mm not 3x1000cc as I posted above

Re: confused with hsf pcb
 

perhaps the turbo has reached its peak flow?

Re: confused with hsf pcb
 

Can you not get methanol?

Re: confused with hsf pcb
 

it is efr9174 wit capable flow of 96lb/min i am sure there is enough room for power grow
yes , I ll try to do so.
The next step we will try
- get a race gas ron109 and see the diffrenece playing afr and timing at desired boost 1.4 bar
-replace alcohol we have now (96% ethyl spirit allowed to food industry from "known guy" ) with methanol from in sealed tank from manufacters (its not easy to get because of the regulations and restrictions)

Re: confused with hsf pcb
 

I have spotted a soldering error, can you please correct it.

http://www.aquamist.co.uk/forum/unlink.jpg

Re: confused with hsf pcb
 

Also add solder link MPS to the iDC to obtain 70/30 idc/mps flow progression. this will provide some boost/flow compensation on the system.