so my dad builds sand rails and we run the j32a1s and the j35a4 and everybody tells us that when you turbo them no matter how much boost your running you HAVE to run race fuel. we have customers running stock j35a4 on 5psi and running race fuel.... doesnt make much since to me cause their only 9.4:1 cr so how come on 5 psi on a j series you have to run race fues and a b series you can run 12 on regular?

 

that is incorrect. you don't have to run race fuel. "everybody" is wrong in your case.

 

that is always what i thought and that is what i always told my dad but he never beleives anything i say. idk if it makes a difference but the motors are also turning 35in tires and are in sand so their under a little more of a load?

 

you could run a lot more then 5psi on that motor on pump gas

 

Im sure they will see some more load then what a car generally sees on the street. However more then likely they weigh less then your average street car. Like Shodan said those people are simply wrong.

 

What EMS are you using to tune the fuel and timing?

 

i think the reason people tell you to run race gas is b/c for extra safety. Hence there isn't really a ecu management to retard the timing on that motor just yet.... So the race gas would allow you safely to run higher boost on the high of stock ignition timing..

So, in theory, those people are correct..

 

you can run an aem fic on that setup to control fuel and timing.

 

rite now we have just been running the stock ecus. we just use a set of needle nose plyers to break out the security chip to run in the rails and for the turbos in front of the air sensor we put this thing on their with a glass ball that fools a sensor and for fuel we use the stock injectors but run a fuel pressure regulator that for every pound of boost it puts so much more fuel pressure.... and for like wiring in a j series motor into a civic should be pretty hard but i dont see why we cant use our sand rail wiring harness as long as you dont have to go through deq cause they are cut down to only pretty much everything to make the motor run and my dad does it all himself?

 

He runs stock ecu, he cuts a full harness just to run engine only. And dismantles the ecu to only run the motor. Pretty sweet cuz it cost him nothing but an hour or 2 and a tuning shop is quoted 200min price for just the harness.

 

This is what I expected. If you ran a programmable EMS like AEM you could run larger injectors, tune for a proper AFR, and most importantly pull timing per pound of boost ... allowing you to make more power, increase reliability, and run pump gas. You could even upgrade the fuel pump and injectors and tune for E85 and make way more power.

The cost of the EMS would be recouped after maybe 3-4 weekends of not buying race gas.

 

http://www.aemelectronics.com/engine...oller-f-ic-12/

are you talking about something like this?

 

Like I already said...you can use the AEM FIC

 

pics of rails please!

 

these are all rails that my dad built....

http://www.buggyfreaks.com/forum/viewtopic.php?t=2614
http://www.buggyfreaks.com/forum/vie...rails&start=50
http://www.buggyfreaks.com/forum/vie...r=asc&start=50
http://www.buggyfreaks.com/forum/vie...897&highlight=

 

could they run a mega squirt

 

NO!!!! screw mega squirt.... we had a ford 2.3 tyrbo motor that was mildly built with a mega squirt and wee took it to the dyno 4 times and it ended up blowing up cause it was running to rich.... the guys could not makt that thing run rite for their lives and we rebuilt it and put a stock computer to it and it runs like a champ to this day

 

sounds like a user issue, not megasquirt.

 

Were you using it to control fuel and timing? or just fuel? My guess is just fuel and it blew because of too much timing. There are plenty of people dominating with MS, if you failed it's tuner error.

 

i wasn't going to say anything

 

it was a customer and idk what they did but between several different dynos they couldnt make it run

 

that **** is garbage. Hondata needs to come out with something for the j-series soon...

 

i never heard of a motor blowing up b/c its running too rich.. More like too lean?

 

Care to elaborate on that?

 

you have to realize when you are running to rich you get cylinder wash and that is what messes up motors and im pretty sure that big clouds of black smoke is not running lean