Includes:

TPiS Air Foil, TPiS Billet Adjustable Fuel Pressure Regulator, Magnum Spark Plug Wires, TPiS Air Filter Element, Billet TPiS I.D. Plate, 8 Bosch Platinum Spark Plugs (add $30 to upgrade to +4's), and a Battery Mat.

How much of a horsepower/torque increase/restore can be expected with using this on a 91 L-98 w/80,000 miles?

What would be a recommended fuel pressure setting for performance reasons?

What are the +4's they want $30 for?

Thankyou for any help.

 

ok ill do my best to answer this for you

i wasted money on TPI`s insider ints book, which is a bunch of crap it doesnt tell you anything really useful, anyways in the bok it has a dyno graph for the following

87 305 tpi w/MAF and tpi`s fastpak:
stock fuel pressure was 42 psi and here are the results
TQ HP
2000
2250 237.7 101.8
2500 241.7 115.1
2750
3000
3250
3500
3750
4000
4250
450
4750
5000

 

ok ill do my best to answer this for you

i wasted money on TPI`s insider ints book, which is a bunch of crap it doesnt tell you anything really useful, anyways in the bok it has a dyno graph for the following

87 305 tpi w/MAF and tpi`s fastpak:
stock fuel pressure was 42 psi and here are the results
RPM TQ HP

2250 237.7 101.8
2500 241.7 115.1
2750 241.5 126.5
3000 237.1 135.4
3250 233.8 144.7
3500 241.0 160.6
3750 246.6 176.1
4000 250.4 190.7
4250 251.6 203.6
4500 253.5 217.2
4750 245.0 221.6
5000 227.6 216.7

the list below is there results for the same motor at 46 psi numbers in parenthesis indicae change.
RPM TQ HP
2250 254.9 (+17.2) 101.8 (+7.4)
2500 262.1 (+20.4) 115.1 (+9.7)
2750 275.2 (+33.7) 126.5 (+17.6)
3000 278.2 (+41.1) 135.4 (+23.5)
3250 278.9 (+45.1) 144.7 (+27.9)
3500 278.2 (+37.2) 160.6 (+24.8)
3750 283.4 (+36.8) 176.1 (+26.3)
4000 278.3 (+27.9) 190.7 (+21.3)
4250 272.5 (+20.9) 203.6 (+16.9)
4500 257.3 (+3.8) 217.2 (+3.3)
4750 242.1 (-2.9) 221.6 (-2.6)
5000 225.0 (-2.6) 216.7 (-2.5)


now of course i think anyone on these boards will wave one of these at there results, dont get me wrong you will probably notice a increase in gas mileage, throttle reponse, driveability,etc. probably a minor increase in performance by installing a fastpack, but if i were you id look into buying the components seperately. thats what i did, also made my own adjustable fuel pressure regulator, which is very easy to do. if your in need of a tuneup and just want to get everything in a kit then get it but if you shop around like i did (ebay, summit racing etc.) you may be able to cut the cost down considerably.

oh on another note, the platinum +4 sparkplugs have 4 electrodes, just another gimmick, they sell for $6.99 a peice where i work at, and i used a set in the past (free promo) and i didnt think they were that great.

well i hope i could help,if you have any more questons feel free to e-mail me

sorry so long

 

i ditto those plus 4's there nothing it was the exact same deal for me from the place i worked