that Horizon has 44k only, it was the little old lady driving it to church every Sunday story in real life.
thanks a lot for the info Leprechaun93 / Zippy / others...


i'm going with the cold -air intake(CAI) / plugs(Autolite 103) / wires(OEM) / gas filter(A/C Delco) / reliable PCM tune for now...
save more $$$ for some sort of exhaust change in the search for more horses!!!

 

I would wait for the PCM tune personally. If you plan on doing more mods in the future, you will need to tune again. IMO, the best time to tune is when you've done a bunch of mods, not just a cai.

 

Thanks Zipper. I was looking at post from bumpin96monte, and was considering this route for now. from what I can tell this would be $1,200-$1,500 to get done. obviously i'm a novice with knowledge, so i'll proceed slowly. what's your thoughts on this game plan from bumpin96monte, Zipper???


There is a very simple and straight forward list to obtain approximately 300 crank horsepower (~240whp) and to be able to run high 13 second 1/4 mile times (with minor track prep- in full street trim).

-CAI/FWI, (the most common used is the 4" inlet, 9" long K&N, but many will work), you want as little restriction and as little temperature as possible for the s/c to provide the coolest output. Do not do a 'hot air intake' with the filter in the open engine bay at this mod level. This runs $50-300+ and power gains are minimal, but you will now hear the supercharger scream when you floor it!

-Downpipe, do a 3"- this eliminates the neck down right inside the first bend of the DP, and eliminates the ubend. These things are cheap if you don't need a cat, but even with a cat, they are worth it $80-200

-Plugs (while plugs are useless for an L36, the stock platinum plugs do not work well with modded L67s). For this step either go with Autolite copper 605s (1 step colder than stock) or Autolite copper 104's (2 steps colder than stock). If you don't plan on going further than this list- go with the 605s. Less than $10

-180* thermostat- just another mod that seems to help w/ KR reduction $15

-ZZP Powerlog- basically a front header only- eliminates the neck down point just before the crossover pipe, and is a very quick and easy install ~$100.

-1.9:1 modded stock rockers- open the valves more, letting more air in and out. These are the most difficult part to install of these basic bolt ons, you pull both valve covers to change them- but you can leave the stock springs, and driveability and gas mileage stays about the same. These are the second most noticeable power gain next to the pulley drop. Prices range from $200 used up to about $275 new.

-pcm tuning- you essentially have 2 options here- a canned tune that they send you a new pcm, or driving to someone and having them custom tune it. A canned pcm is far cheaper at $100, but its gains are typically nowhere near a one off tune. Honestly, if you plan to spend the $250+ on a custom tune, you should consider buying your own tuner (they start at $400 for the 3800s)- but be prepared to learn... A LOT.

-supercharger pulley drop (if you will stop modding at this point- go with a press on pulley- if you plan to go on, then buy a modular setup so its easier to change again later)- you do need to scan for knock first- after all those other mods are done. If you still have knock, then you probably have a problem. If not, you're good to drop pulley sizes. With those mods above, you should be good to go for a 3.4" pulley, however, if you had a very hard time getting rid of factory KR, and you barely did- a 3.5" pulley would be a better choice. This is likely the most significant power change for the basic bolt ons, as long as you end up with little to no KR. Press ons go from $20-60, modular setups go from $80-150.

Obviously you can continue adding mods onto that to make more power, but those tend to be the basic core of mods. If you've still got a little knock and want to be safe- a throttle body upgrade is next on the list if you just need 1 more mod.

 

If you're looking at running a 13 second 1/4 mile, bumpin is right on the money. I would just advice doing the PCM tuning last, otherwise you'll be spending money on the same thing (PCM tune) more then once. Bumpin knows his stuff and is a great resource here.

 

Thanks zipper, I didn't know the PCM-tune would be needed with every mod done. if I can get this package done for no more than $1,500. I would be done for quite sometime, quite possibly for good even...

 

You're 100% right, horizon was owned by my grandmother who did go to the store and church lol.

 

Hey ohara, thanks for that link to bumpin96monte...helped big time...I think I can get this mod-package for $1,500 installed (I think)

-CAI/FWI, ( 4" inlet, 9")

-Downpipe, do a 3"

-Plugs/wires (Autolite copper 104's)


-fuel filter

-180* thermostat- just another mod that seems to help w/ KR reduction

-ZZP Powerlog / front header

-1.9:1 modded stock rockers



-supercharger 3.5" press on pulley-you do need to scan for knock first- after all those other mods are done. If you've still got a little knock and want to be safe- a throttle body upgrade is next on the list if you just need 1 more mod.


PCM-tune

 

^ one change i'd recommend, instead of a press on pulley, pick up a modular pulley system, that way you can change sizes just by un bolting the pulley. Makes it much easier in the long run.

 

he did say that, if I was going to keep on going...as I sit here today, i'm thinking I might be done with this mod package...guess I need to be sure though...

 

Can't hurt to do the modular system either way