c4gone

I say realistic because my friends that own imports and mustangs seem to think that the mods on my car added a million hp so I just wanted to get an honest estimate of what you guys think. I bought the car with these mods so I don't know. im guessing around 15-20 hp realistically.
its a 99 frc.

I bought the car with

ls6 intake

k&n cold air

billy boat bullets exhaust

underdrive pulley

maf sensor

and the previous owner said it has a tune.

I know it isn't going to be astronomical but a give or take estimate. like I said im estimating around 15-20 hp over stock

F&Yb0dluvr

Realistically with a good tune I don't see why those mods wouldn't add around 30. LS6 intake alone is about 10rwhp on a stock 99'

c4gone

oh cool. thanks!!

ZigZag

340 rear wheel, but go find a nearby dyno and get more accurate numbers.

c4gone

well each time ive had it at a shop in san Antonio its to fix something and haven't had it on the dyno

c4gone

340 seems like a lot of rwhp though considering it came with 345 hp at crank. I wouldn't think those mods would increase it that much

memmer

My 01 vert dynod at 289 ATW with only cat back exhaust and CIA.I don't see 340 with what you have.
Fred

c4gone

yeahi personally think 340 would be too much. I was thinking more like 300 but im not knocking the comments lol

4XLR8N

Dyno results for my '97 with a Callaway Honker CAI, B&B Triflow cat back and tune (car is an MN6). Baseline was with mods, but before tune...

F&Yb0dluvr

A 99' 6speed C5 puts out around 300rwhp stock 01 Z06 about 340 I would guess your car is putting out a little under an 01 Z06 if everything is up to snuff...

djmlax89

My 97 A4 with zip tie intake, B&B Bullets, and 94k on the clock dyno'd 291 before tune, 305 after.



With those mods, I'd ballpark 325-330 with a solid tune.

skydiven4fun

My 2000 FRC hit 323 at the rear wheels before I did anything, every car is different but I'm thinking you should be around 340 or maybe a little more, but like I said ever car is different.

After a new fuel system and some more tuning mine picked up another 14+ ponies, amazing what a good tuner can do

Mr Russ

I have an 01 coupe automatic with 58K and the following mods:
- Blackwing CAI
- B&B Route 66 cat back
- Kooks LT's with high flow catted mids

My dynotune numbers were 331 rwhp and 340 torque

c4gone

ok with all these comments it seems good with the ls6 and pulley. does the underdrive pulley add a lot?

c4gone

and also the maf sensor

4XLR8N

Technically, an underdrive pulley doesn't "add" hp - it reduces parasitic drag from the accessories (since they are spinning at a lower rpm) and thereby "frees up" hp to drive the wheels. How much hp is "freed up" would depend upon how much of an underdrive it is. Generally speaking, it will probably net you 2 or 3 ponies on the dyno.

I cannot speak to the maf...but like a lot of mods, the potential gain is likely tied to how modified your engine is (i.e. the closer to stock, the less the gain)...

c4gone

gotcha. I do not have an exact on the pulley size but when the car was at the shop I was told it looked like a %25 percent underdrive.

Corvette_Ed

Neither of these mods would add HP. You'd also have different ratio rear-end gears if yours is an auto trans, which I'm betting you have with only 289 HP.

Corvette_Ed

It's closer to 320. With the LS6 intake it would put him at around 330 or more with a tune.

c4gone

don't forget the spark plus