nastytxz/28

I got motor all runnin ms3 cam ls1 little bump in compression 243 heads ls6 intake wilson 94mm throttle body bigger injectors there the svo red ones headers so it fires up runs but it is super slugish free reving its really rich at idle shakes fairly decent at idle idles around 1000 rpm should all those mods make it run like that i know i need a tune i just dont wanna get on dyno and have probs ecm was tuned for smaller cam prevouisly or do u think i have something wrong

redbird555

iTrader: (14)

First of all wtf did I just attempt to read? If you want help you need to post up in an educated and somewhat coherent fashion.

And no it sounds like you just need a tune bad. Big injectors will make the car run really rich, and if not tuned properly can ruin the piston rings by washing them with fuel. A litle cam tune wont do crap on an ms3 seeing as its a huge cam. And there's no way you fit a 94mm tb on an ls6 intake without a huge adapter. In which case do yourself and the tuner a favor and put a stock ported one on.

Cstone812

iTrader: (5)

Sell the car and buy hooked on phonics.

Lockdown99ss

iTrader: (1)

Any codes showing? I did a similar setup on mine and it felt sluggish, but it was mostly due to 2 cylinders not firing at the time ( broke the PCM during the engine swap ) If no codes are showing, you likely just need a tune. What you have done I would consider significant modifications and the car needs an immediate tune, especially with bigger injectors. To be safe, most people wait to install the bigger injectors until they are at the dyno shop.

nastytxz/28

Yes im gonna get a scan tool from autozone lockdown99ss and see if there are any codes it just revs super slow and dont want to be on the dyno trying to trouble shoot stuff the check engine light is off

"MAC"

iTrader: (1)

Just get a tune it'll be a lot easier to tell if something is messed up

HCI2000SS

iTrader: (2)

Sounds good keep us posted hopefully that solves problem like suggested getting car tuned is good idea that will expose issues and make car run better as well good to invest now with mods cause it be safer and run better as well

Jake the SSnake

iTrader: (11)

You shouldn't even be letting it idle with a bigger cam, injectors, and no tune. Even if it was tuned for a smaller cam. The bigger cam will make it run richer at idle and the bigger injectors will amplify that. You're going to screw things up in a hurry if you don't get it tuned.

nastytxz/28

Im gonna try and get it all button up and hit the dyno for a tune this weekend or nxt week

ls1 1990 VN

You do! your approach to what is needed to be done when modifying an engine.

Chucklee

iTrader: (3)

Ruthless