You'll love the way the car responds. Here's another dyno of a 2008 Manual GT w/C&L Street and Borla axle-backs from today in 93 degree weather!

 

CAI and a good dyno tune, if that doesnt get you to 300 put on some udp's. that should get you at or just barely 300rwhp.

 

I have just one airflow mod and my 07 GT automatic coupe makes 351 rwhp. Car has 100% stock engine, 100% stock exhaust, etc. and I opted for the basic Vortech V2 S-trim supercharger. $3700 for the complete kit (39# injectors, tune/tuner, all hardware to install, etc.). While I also have 4.10 gears and a big stall converter, those don't add horsepower (but they sure wake up the car around town and at the dragstrip).

So, you can spend thousands on exhaust and bolt on's to just barely get to 300 rwhp, or spend about the same (or maybe just a little more) and get a basic, non-intercooled supercharger and net 350-400 rwhp.

 

good point

 

1) I would sure want an intercooler. Don't take offense to that, but with the weather around here lately in the summer, I can just imagine how it would feel south of here in traffic with a non intercooled setup.

2) Some people have the money to do these things in stages only. They'd sure like to get it all, but sometimes it's not worth maxing out a credit card and paying ridiculous ****ing 12-19% interest, etc.

3) For the most part, some people just want a certain exhaust tone, and a certain level of performance and don't want to take it past that level. They want the car around 300RWHP, and they're plenty happy.

I do understand where you're coming from, but I don't think that trying to hit 300RWHP with a few bolt on mods is unreasonable. You can actually do it for less than 1100 with the right tuner. If you go with a good set of long tubes, you're still only at like 2500 tops.

Chris Rose
Tillman Speed

 

C&L Racer, and Brenspeed 93 octane tune put me at 298 HP. Adding underdrive pulleys freed up more HP to get me to 310 HP, on stock exhaust manifolds, stock H-pipe and Flowaster axle-back (said to be slightly more restrictive than most other axle-backs). That combo was good for the time/mph in my sig below on stock BFG street tires.

 

C&L racer and tune 298RWHP? Is that SAE corrected? What dyno?

 

once tuned to 93 (or 91 around here), is it mandatory to only fill with that octane, or can you still use 87, or 89 without issue?

 

It's always good to run the octane fuel in your tank that you have in your tune. If you've got an 87 tune, run 87, if you've got a 91 tune, run 91, etc.

If you have an 87 tune, and run 93, it's not gonna really do much to help you, but atleast if you do that you won't have engine damage.

If you have a 93 tune, and you run 87, you could have some serious issues.

Chris

 

Perfectly good points, Chris. This is the first car I've supercharged, so I've always been that guy who modded in stages. What I saw with the S197 Mustang GT's, though, was an expensive route to build horsepower (with a goal of running low 12's in the 1/4 mile) staying naturally aspirated, so I bailed and went forced induction.

Had I stayed the course for N/A, it would have looked something like this...

• Good tuner and CAI = $600.
• Cams, springs, and install = $2,000.
• Long tube headers, high flow cats, and axle back = $2,500.

Already over the cost of the non-intercooled blower I bought, but I would have done more...

• Better heads = $3,000+.
• Bigger throttle body, spacer, and CMCV deletes = $700.
• UDP's or Meziere electric water pump = $200 to $500.
• and the list goes on.

A lot of guys on these forums build wicked N/A S197's. Thousands of dollars getting thrown into the car that will run high 12's in the 1/4 mile, then mid 12's, then low 12's, then maybe high 11's in the end (after spending thousands over the cost of a supercharger).

I looked long term and bought a basic blower that should yield low 12's in the 1/4 mile with my combo, and should I end up with the extra money to upgrade to the intercooler (back to modding in stages, guilty as charged), then for that extra $1500 I'm into the 11's and will have spent thousands less than had I stayed naturally aspirated.

But, back to mustang68w's original question. If someone wants 300 rwhp, then a few well-selected bolt on's is all it takes to get you there (or a whole slew of not-so-well selected bolt on's). 300 rwhp would be enough to run high 12's and is more than enough for most enthusiasts.

My own personal conclusion was that for just a little more money, a standard blower could be had and more power would be made. Everyone told me to get the intercooled HO blowers to make big #'s (400-450 rwhp is common), but those were out of my budget. The standard blowers have plenty of power to run very quick (350-375 rwhp) and are upgradable should I find more money to spend later.

 

so an intercooler will get you another 75to 100hp??

 

The intercooler doesn't net you any horsepower, but it does allow you to be much more aggressive with timing and fuel trims which will net you a lot of extra power.

 

do you have one for the jlt on 93 race tune?

 

so an intercooler will get you another 75 to 100 hp

 

I really appreciate all of feedback I am getting from everyone on both the na and forced air sides. It definitely gives me something to think about. I'm not necessarily looking for 12's or 11's in the quarter, though I wouldn't mind it as a by-product. I'm just looking to make an already peppy car a little more responsive with a little more power.

 

intake and tuner is the way then. If you do decide to go bigger better and faster later.... you can still use the tuner and sell the intake for not to much under what you paid for it.

 

Speaking of which, I have a JLT II CAI that I installed on my '07 GT last November, and removed in May when the supercharger replaced it. 6 month old CAI that looks/functions like new if anyone is interested.

 

Your a few days to late with that offer Brian at least for me. 1/2 price???

 

Exactly what I mean by finding the right dyno and day if all you need is a chart w/ the magic number on it. We've had one of our cars on 4 different dynos in the same state of trim and have got numbers from 338 to 366 rwhp.

 

I put down 310 and 329 at the wheels two weeks ago with my CAI, LT, Prochambers, axleback, UDP, and tune. Not too shabby.