reset trims after injectors???
Thread Starter
Racer
Joined: May 2004
Posts: 290
Likes: 0
From: LV NV
reset trims after injectors???
I just installed some injectors and the car idles great, has smooth power, but at about 10% throttle there is some slight bucking(noticeable on cruise controll), I did the ifr table calculations correctly but I did not reset fuel trims, should I go ahead and do that or could I have went too far with the ifr numbers?
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
Why did you upgrade? I don't see anything in you sig that would indicate you needed to go bigger. I just went to 36 lber's because my IDC was banging on the 90% area and I was running quite lean. I didn't scale the IFR table since the scale factor was practically equal to how lean I was running. The new injectors have now pushed me over to the manageably rich side so I've been scanning and tuning today to try and reduce my trims. I'm making progress but it's always a long process.
Here's the thread I posted on my install.
http://forums.corvetteforum.com/show...3&forum_id=103
Here's the thread I posted on my install.
http://forums.corvetteforum.com/show...3&forum_id=103
Thread Starter
Racer
Joined: May 2004
Posts: 290
Likes: 0
From: LV NV
for future mods, are you useing hptuners?.... I should still be able to have a somewhat mild setting for the injectors, I'm just wondering if I should play w/ the table or reset the trims and see what that does but I'll have to wait an hour or so if I do the reset.....
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
You'll definitely need to scale the IFR table and then tune to compensate for those. If you scan it now, I think you'll find you are running very rich. That's a 50% increase in flow. It's usually tougher to tune a stock motor with oversized injectors.
I'm using EFILive/Flashscan V7. I have HPTuners as well but haven't used it much.
I'm using EFILive/Flashscan V7. I have HPTuners as well but haven't used it much.
Thread Starter
Racer
Joined: May 2004
Posts: 290
Likes: 0
From: LV NV
you must not have understood what I said in the first post, I allready recalculated the ifr table!... for an update I just tried messing with the ifr table again and I dont think thats the problem, things went way off... there must be something else I need to mess w/ maybe the fuel multiplier around 1400rpm range....
