As you can see below I have very few mods. I am thinking of adding Hooker long tubes and a 52mm TB.....more air in, more exhaust out right? Should I increase my injecter size and if yes to what? Also will 1.6 rockers do much for me with stock cam? Thanks for your help!!

 

Hooker lts seens a nice next mod. You really don't need a 52mm TB yet...

In fact, I think you'll get from the 1.6 rr than the 52mmTB.

leo

 

Due to your mods, you would be doing nothing but wasting your time and money by putting on a 52mm TB. It is not needed. Cars, with heads, cam, and other major mods will require that TB for it not to be a restriction. 1.6 rockers are an ok mod. Pretty expensive for adding 10% more lift to your stock cam. I would only do those with a cam change. The Hookers are good headers, but are also not emmisions legal, and will compromise ground clearance on lowered cars. A regular 1 3/4" shorty would be a great improvement. I like the RKSport brand for $600. You will also need a different cat with that.

 

I pass emission with my Hooker Lts! but I'll not push my luck in states like CA

leo

 

i would get brand new slp 1 3/4 with y pipe from tbyrne.com for around 400! you dont need the tb yet. and ditch the cat while your at it.

 

No problem with emmisions or inspections AT ALL here...I'm in Iowa. Car is not lowered so is ground clearence still a problem? What about injecters? Will any increase help at all? I guess I'll scrap the TB idea for now and use that money for some 3:73's. How much diff. in HP is there in shorties vs the long tubes?

 

1.6's wont do a whole lot without cam, save your money, you dont need a 52mm tb, it flows just fine for a bolt on car...hooker long tubes is a good idea

 

hooker LTs with the dynomax y pipe, great combo. if your not lowered then you should be fine however we have a local guy with the LTs on a unlowered car and his y pipe was badly bottomed out. he ended up selling and going with slp 1 3/4. so just be carefull around speed bumps etc. dont bother with the injectors, you wont have that problem untill you get heads and cam. also with the 93s you will have to get your cpu reprogrammed if you add bigger injectors, youll be runnign rich. we can get away with our injectors for a while due to our batch fire ignition. LTs Y pipe, gears. great SOTP feeling. ditch the cat while your at it.

 

you have a m6 right? whats your gears right now? 93 m6s have two different gear boxes, 3.73s may be not be needed. 3.42s should be sufficient.

 

Right now I am running stock gearing 3:23's. I did plan on eliminating the Cat. Any other easy mods for now?

 

Don't waste your time on the TB, injectors, or 1.6rr's right now, that will be later when you do a cam and head swap. Trust me you will end up doing one, we all do. If I were starting from pretty much scratch I would get the COATED Hooked LT's, no cat y-pipe, SLP Loudmouth, and 4.10 gears for your M6. I would also get some free mods done, from these guys. You definatly have to loose that restrictive flowmaster muffler, don't worry I made that mistake too! I think with these mods you should see some mid 13's w/traction.

 

Aftermarket rockers do more than people think. The more effective variable isn't the lift itself it's the lesser friction of the roller tips, one of the newer GMHTP issues put some roller rockers (1.6 I think) on a mostly stock v6 and it gained somewhere in the area of 15hp...

 

DO NOT GO WITH THE 4.10S!!!!! our 93 m6s have different gear boxes. the 4.10s will feel like 4.88s, and make your first gear useless along with it. if you must do a gear swap go no further then the 3.73s, personally id do a 3.42 on the 93 gear box at the most. also full roller rockers will make a difference, more then just lift but free up horsepower from friction of the stamped steel pieces.

 

3.73's are perfect on the 93's "G92" gearset if you run on DR's and are not trapping over 120. The first 3 gears would be almost exaclty the same as a 94-02 T56 with a 4.10... The other manual gearset though in the 93's (I forgot the code) has a 3.3x first gear so I would go with a 3.42 at the most with that gearset...

 

93 had 2 different gearboxes. The M29 that came with the 3.23 car and the M28 that came with the 2.73 cars. Here are the transmission gear ratios:
M28 M29 94+
3.36 2.97 2.66 1st gear
2.07 2.07 1.78 2nd gear
1.35 1.43 1.30 3rd gear
1.00 1.00 1.00 4th gear
0.80 0.80 0.74 5th gear
0.62 0.62 0.50 6th gear

For gear change - You must change the speedo gear in the tailshaft of automatics. The speedometers on the '93 A4's were not electronic like in later years. M6’s require an electronic calibration box to correct speedo. However, the speedo can be corrected for 3.23 and numerically lower gears by modifying the eprom.