gh94z28

Do you know Who i could get to do that?

riceburnerZ28

iTrader: (20)

I have the cc306 and I notice the cam surge while driving at 1500rpms but once I get past 3 grand its gone. That comes from a poor cam selection although all I need is ported H/I. To the OP you should try scanning for codes first !

gh94z28

Already have no codes.

riceburnerZ28

iTrader: (20)

Do u have the ignition box hooked up?

gh94z28

Yes a msd 6a box.

riceburnerZ28

iTrader: (20)

have you tried disconnecting it and driving on the stock ignition? If so what happens?

gh94z28

I havent tried that, I will try it tonight and post back. Thanks

Ihasfip

iTrader: (5)

See thats how mine is. If I drive at 2100 in 6th gear or so it isn't noticeable. I guess it could be cam surge. Poor setup with the heads and intake. I just remember with my very large (236/248,.574/ .595) cammed 5.0 fox body with heads and intake there was no cam surge what so ever. I guess it is all in the setup. And the fact that it was carbed.

D

riceburnerZ28

iTrader: (20)

In 5th & 6th gear cruising on the highway my car shakes and its power is dead but I still love it !

kinglt-1

iTrader: (26)

What gears were in your fox body? Big duration cams need gears to help combat cam surge. Also for some reason gm pcm's are sensitive to adding lt headers. The O2's see more oxygen in the collector causing a false lean condition. If you log fuel trims I bet they are way off when experiencing the surge. My fuel trims are +15 at idle but soon as I touch the throttle they lock in right at 0. Im lookin at getting a sd tune from pcm for less someday! I say **** the maf and 02's, tune sd!!!!!!!!!

gh94z28

Ok i disconnected my msd box and it didnt change anything. I am going to try and test my TPS this weekend. Do you thank that could be it?

kinglt-1

iTrader: (26)

Nah I doubt it!

Green3spd

iTrader: (7)

No.. You are pretty much describing my car.. it is cam surge.. I figure after a set of gears I wont notice it as much but im still on stock tune(232/239) but Get my mail order tomorrow so Ill let you know if it is any different..

gh94z28

I would appreciate that. Thanks
Where are you getting your tune from?

riceburnerZ28

iTrader: (20)

If your tps was bad it would throw a code. Mine is throwing a code now and it stumbles on acceleration the idle is off and both my o2 sensor I reading lean but I know it's just the connecter is fubared ! It's gonna be kinda hard to diagnose your problem without actually hearing though ! I'll try to help though !

kinglt-1

iTrader: (26)

Agreed, but a speed density tune will fix all the surge. It's pricey but, a sd tune will make a big cam drive like stock. Thats why alot of ls1 guys tune sd, because the size of the cams they run ***** with the o2's @ idle/ tip-in, especially with long tube headers. Also gears will really help alot!
Also to the op, a cc503 should not require a sd tune, but if you can't get the surge fixed, it might be your last resort. I would say take the car and get a dyno tune. The mail order tune could be some of it, but a cc503 is cookie cutter cam, and most mail order tunes should be sufficient.

Ihasfip

iTrader: (5)

My 93 fox only had 3.73s through a 5 speed. But like I said it was carbed. Whereas my f-body has 4.10s through a 6 speed and it bucks and jumps. I hate the surge or wtf ever it is. I am going to put a fuel pump and injectors in it and get it retuned on a dyno and see what it does then.

D

Green3spd

iTrader: (7)

I got my tune from PCMFORLESS.. Ready to get off and plug her up..
Keep you updated..

Also, If I notice it more, it tends to throw a P0303(cylinder 3 misfire)

gh94z28

I left the msd box off and drove it for a few days and it really feels much better now. I think when i tried it when you suggested it i was expecting for all the surge to be gone. I can still feel a very little now nothing like before. Thanks riceburnerZ28