Tweecer installed and working, J4J1 loaded up :)

DoctorB712

New Member
Apr 19, 2004
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Montreal
Well after 60 minutes of upside down work (raining outside so door closed!) tweecer is finally in and I should say working perfectly even calcon.

I loaded up the J4J1 file and my idle went from up-down-up-down.... to being rock solid at 650-700 :) I dont even have my new MAF sensor yet!

Car does pull a bit less when I step on it though (Grady had said it would because the cobra file's spark table). I will start tuning the spark table next.

I also fixed my stupid fan that only came on at 230 before.... now I run at a cool 190-200 and 180 highway.

The only downside is that my car now pings when I downshift!!!! It only does it when I use the tranny to slow down, if I put it in neutral and use the brakes nothing. I also think I hear it at idle but I might be nuts... it is there on downshift though? Any ideas. My car did ping like a bitch before but only when warm and at higher load.

Overall, very cool and I love the dataloging feature....
 
DoctorB712 said:
Well after 60 minutes of upside down work (raining outside so door closed!) tweecer is finally in and I should say working perfectly even calcon.

I loaded up the J4J1 file and my idle went from up-down-up-down.... to being rock solid at 650-700 :) I dont even have my new MAF sensor yet!

Car does pull a bit less when I step on it though (Grady had said it would because the cobra file's spark table). I will start tuning the spark table next.

I also fixed my stupid fan that only came on at 230 before.... now I run at a cool 190-200 and 180 highway.

The only downside is that my car now pings when I downshift!!!! It only does it when I use the tranny to slow down, if I put it in neutral and use the brakes nothing. I also think I hear it at idle but I might be nuts... it is there on downshift though? Any ideas. My car did ping like a bitch before but only when warm and at higher load.

Overall, very cool and I love the dataloging feature....


Be sure to return your dizzy and fuel pressure back to stock settings :)

Grady
 
final5-0 said:
Be sure to return your dizzy and fuel pressure back to stock settings :)

Grady


Done, my car has never felt so good before. It runs so smooth and it idles like a new car. I cant belive how much a different it makes.

As a first trail I put my stock spark table in the J4J1 and ran it like that. Much better than before but I think I have some room to improve.

Anyways, my overall experience with the tweecer is only positive.... except for the upside down install :notnice: .... but woth it all the way :D
 
Yeah the timing is way back on those, my timing right now maxes at 2500rpm and 34° totall it will go higher without noticeable detonation but I'm afraid to try without a WB. It's a huge improvement over the 26° stock or whatever it is :nonono: Like I mentioned in your other post, the J4J1 fuel tables are mapped diffeently and it's a good ping fix but my car woudn't run with the J4J1 untill I put in my cam and then it was the opposite, the stock tune wouldn't run and the J4J1 ran great, go figure :shrug:
 
I guess every car is different and respond differently to tunes. I have the stock heads and cam with cobra intake and it runs great :shrug:

It is very fun to play with the EEC like that. I cant wait to understand more and tune other things.