I recently swaped my single cam from an ef to an eg and I am now trying to tune it with crome. I built the head w/ cam and added a blox intake and throttle body. Other than that not much has changed since it ran in the ef. Now It will not start in the eg. It is getting spark, although it seams a liitle weak. I've checked the timming and firing order(good), compression(good), tried different engine harness. It is getting fuel, but it seams like way too much, and won't ignite. If I unplug injectors it will actuattly fire on leftover fuel in cylinders. my friend has tried multiple base maps on the 750cc injectors and we've also tried 450's. floods out every time. Any suggestions would be great.

 

why in the world would you run 450's let alone 750's. unless your boosted and completely build engine put the stock injectors back in.

 

You want the stock ones -- they are around 245cc's I believe.. haha

 

you adjust the map for 450cc's or 750cc's?

you're flooding becuase your map has values for the stock 250cc's. go into the injector size tab and change the values to what ever injectors you want to run right now.

you should see the entire table scale down....not up.

you are dumping fuel in that damn car if you have the inputs for 250cc's when you have 750cc's on there the injector pulse is wayyyyyyyyyyy to long, 750cc's flow alot ALOT more fuel than 250cc's you simply cannot have themopen for as long as 250cc's on a stock motor!

if you did'nt get any of that load your map on here ill do it for ya, tell me what injectors you want to run.

also its crome FREE right not CROME pro right???????????????????

 

It is a fully built z6 including a built head. I'm running a gt30r on 22lbs. I'm not a dumbass...Iwouldn't run 750s or even 450s on a na z6. I have tried a map with the 750s and took out *** much fuel as possible and it is still flooding it out. The 450s where just tried to make sure my 750s wheren't jacked up.

 

hmmmmmmmmmmmmm

upgraded fuel pump? sometimes they pump out a SHIZNIT load but i doubt thats the case. whats the fuel press btw?

 

Ya, walbro 255. haven't checked fuel pressure. Would low fuel pressure cause gas to spray in less of a vapor form? that was somthhing I thout about. Maybe its just pouring in and not mixing with the air?

 

check the fpr may be damaged
and also change your plugs they are deff fouled out now.
as the base map recheck everything and start over on the fuel tools in crome

 

My have found the problem...the ostrich cable. Labtop says it is connecting but we tried to make adjustments to a freinds integra using the same ostrich cable and box, and there was no change in the a/f ratios. So I'm gonna burn a chip with an approximate map to see if she will run. If so, i'll have to buy a new ostrich cable.