2G Sputtering issue

[Chris Ponce 97_gst]

Hey what’s up guys so recently got my car street tuned on e85 and I’m having a sputtering issue from dead stop to accelerating under 2k that’s when it will happen after it’s fine it is a stock motor with bolt on 255 Walbro 1200cc fuel filter replaced but just can’t seem to get rid of this issue maybe u been with this issue and maybe I can get some help let me know

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[jpmxrider489]

You on dsmlink? I assume you have a fuel regualtor? And does it do it on normal pump gas as well? What plugs and what gap?

 

[Chris Ponce 97_gst]

It is on link also .25 sparks are gapped the car came with for but turned out to be eBay so will be looking for one very soon

 

[jpmxrider489]

I would get a regulator just for the peace of mind. Can you post a log? When your on the throttle under 2k it stutters like a misfire? Is the stutter while driving ir what circumstances?

My car does it to but goes away once warm. My plugs are gapped tighter and I run NGK br8. If your under 30psi you can get br7. I dont run the BPR like most people.

 

[Chris Ponce 97_gst]

It’s like a jerking misfire then little under 2 k it picks up its weird and spark plugs are bpr7 I’m about 24psi

 

[jpmxrider489]

You can try br7 plus. My tuner reccomend them for e85. Are you logging fuel pressure? I would update plugs and wires. Not sure if that's the issue but I wouldn't hurt. If you got the car professionally tuned I want to assume the regulator is ok. Can you post a log up so I can see what it's doing? When you change plugs, gap them a little smaller. If its misfiring the tigher gap helps. What are you air fuel ratio doing during this? So is this issue all the time. Warm, cold, and driving?

Side note, make sure to use correct grammar. A moderator can jump on you about it.