Timing and idle questions

[slo1]

I got off work early today so I figured I would mess with the car a little more. I played with the timing and
with the spout out and timing set at 15 deg. the car idles perfect around 7 to 800 rpms the cam sounds awsome no surging at all.
Then plug the spout in and here we go again surging and cant even tell the can is in the car idles smooth around 900 rpms is this normal
I know I need a tune but im just wandering if this is normal or does it sound like my ecm is goin wacko. The car has really never idled right from stock to where it is know ive replaced every sensor iac valve with a ford oem and tps is there a way to check my ecm its throwing no cel

 

[SVTurbo 98]

Not all codes will trip the cel with obd1...it wouldn't hurt to check the koeo/koer/memory codes to make sure there isn't anything stored. Do you have aftermarket injectors/maf? It may just be tune related...

 

[slo1]

it has the stock f1ze bosch four hole injectors and stock maf it also has edelbrock rpm intake and bbk 70mm throttle body but its been doing this since the stock motor and set up was in the car the throttle body seemed to help a littleit wont die know just cant hear the cam at all with spout in. on a cold start it will idle perfect with spout in or out the cam talks good

 

[SVTurbo 98]

my only advice is to go ahead and pull codes

koeo
koer
memory
cylinder balance test

in that order and let us know if anything comes up...

if you need help click this link http://sbftech.com/index.php/topic,2471.0.html