88GXL HP increase
#4
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Originally Posted by scathcart
Yes.
Intake cone filter and full exhaust should put you around the 195 BHP mark.
Intake cone filter and full exhaust should put you around the 195 BHP mark.
#5
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Originally Posted by scathcart
Yes.
Intake cone filter and full exhaust should put you around the 195 BHP mark.
Intake cone filter and full exhaust should put you around the 195 BHP mark.
#6
1.3L is not that small
Originally Posted by BlaCkPlaGUE
I can't believe that! Theres guys here struggling for 175bhp, let alone 200. Eh, but I could be wrong.
i think he is being sarcastic... scathcart knows better than that lol ... read the dyno section... people are struggling to hit 185 with full mods and stock ecu and whatnot.... however his post is misleading to an extent but was more than likely humor
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Originally Posted by cwsttu
i think he is being sarcastic... scathcart knows better than that lol ... read the dyno section... people are struggling to hit 185 with full mods and stock ecu and whatnot.... however his post is misleading to an extent but was more than likely humor
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#9
I wish I was driving!
Originally Posted by BlaCkPlaGUE
I can't believe that! Theres guys here struggling for 175bhp, let alone 200. Eh, but I could be wrong.
On a good compression engine S5 full exhaust and a cone intake filter will put you at 160 hp to the tires. Factor in your 15-17% drivetrain losses for those power levels, and what bhp do you get?
#10
I wish I was driving!
Originally Posted by cwsttu
i think he is being sarcastic... scathcart knows better than that lol ... read the dyno section... people are struggling to hit 185 with full mods and stock ecu and whatnot.... however his post is misleading to an extent but was more than likely humor
The poster asked if it was possible to achieve 200 hp reliably. Without specification, assume he meant a 200 hp engine. My answer was correct.
185WHP is approximately 220 BHP.
#11
Rotary Freak
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Originally Posted by scathcart
BHP is brake horsepower, as measured via an engine brake dyno. It gives an accurate measurement of engine horsepower at the flywheel, as it is not affected by rotational inertia.
The poster asked if it was possible to achieve 200 hp reliably. Without specification, assume he meant a 200 hp engine. My answer was correct.
185WHP is approximately 220 BHP.
The poster asked if it was possible to achieve 200 hp reliably. Without specification, assume he meant a 200 hp engine. My answer was correct.
185WHP is approximately 220 BHP.
#12
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Originally Posted by scathcart
Stock BHP for a S5 is 160.
On a good compression engine S5 full exhaust and a cone intake filter will put you at 160 hp to the tires. Factor in your 15-17% drivetrain losses for those power levels, and what bhp do you get?
On a good compression engine S5 full exhaust and a cone intake filter will put you at 160 hp to the tires. Factor in your 15-17% drivetrain losses for those power levels, and what bhp do you get?
#13
I wish I was driving!
Originally Posted by RotaryWeaponSE7EN
Thats also based ont he fact that u know what the % of hp is lost through the drivetrain.
A 265 bhp bridgeported 4 port engine, as measured via an engine brake dyno, put down 224 hp when mated to a 2000-mile rebuilt TII transmission with synthetic tranny fluid and a stock TII clutch-pack differential. (note: not my car)
Based on this first hand knowledge, I estimate normal power losses through the drivetrain to be 15-17%.
Originally Posted by RotaryWeaponSE7EN
It also depends whether or not he has a stock clutch and PP. Basically start mods and save money for dyno time is the only way to be sure.
Also, given a 12 lb drop in rotating mass at the flywheel/clutch assembly (about the max you can go with on anything but a multi-disk clutch set-up), a 2400 lb car, by calculation, would gain 9-10 engine hp, or approximately 7.5-8 measured hp to the tires. BHP would not change.
#14
I wish I was driving!
Originally Posted by dorkman52000
He has an S4, though, with something like 142 bhp. It's going to be harder to obtain the 200 hp mark with just a filter and exhaust with an S4 than it is with an S5
Mark's basically stock S4 block (very light port cleanup) with S4 rotors (lower compression), exhaust, intake filter, and an S5 VDI manifold set-up saw 175 hp to the tires... That's still over 200 bhp... and he passes emissions.
Of course, all of these values assume a good compression motor in good tuning.
Heck, these listed values are even including use of only the stock ECU.
#15
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Originally Posted by scathcart
146 bhp.
Mark's basically stock S4 block (very light port cleanup) with S4 rotors (lower compression), exhaust, intake filter, and an S5 VDI manifold set-up saw 175 hp to the tires... That's still over 200 bhp... and he passes emissions.
Of course, all of these values assume a good compression motor in good tuning.
Heck, these listed values are even including use of only the stock ECU.
Mark's basically stock S4 block (very light port cleanup) with S4 rotors (lower compression), exhaust, intake filter, and an S5 VDI manifold set-up saw 175 hp to the tires... That's still over 200 bhp... and he passes emissions.
Of course, all of these values assume a good compression motor in good tuning.
Heck, these listed values are even including use of only the stock ECU.
#17
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Originally Posted by scathcart
Showing what?
I'm still learning about all the little things you can do to these cars
#18
I wish I was driving!
Originally Posted by dorkman52000
The S5 manifold......sorry; posting that
I'm still learning about all the little things you can do to these cars
I'm still learning about all the little things you can do to these cars
#19
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it is not significant. . but it does help and smooths it out a bit. . if you add the s5 manifold along with full exhaust and intake it will show it self a little more.
#24
King of the Loop
Originally Posted by NZConvertible
Mark's S5 UIM was expensively modified using the Extrudehone process. It was not a simple bolt-on affair.
#25
Well I just got an 88 and am also looking to improve its HP. First things first tho and thats getting the engine maintained which means a 90k service on a 94k engine. Thats about 500 bucks right there but after that this is what I plan on doing to it (as of now)
Stock HP ~147
~Racing beat exhaust: Downpipe, presilencer (pn 16209-$290-18hp gain on a 87RX-7) and Y-pipe and mufflers (pn 16420-$576-with a 5-7hp gain)
~HKS or K&N intake: Not sure which yet so no part number, but either should give appx 7 hp gain for about 180 bucks.
~Im looking into new flywheels as what I understand a better one would give me more response at lower RPMs and would mean faster shifting? which means quicker car.
~a Twin Power Rotary ignition amplifier from HKS: "The Twin Power ignition amplifier incorporates both the CDI and transistor method ignition to provide optimum spark duration and maximum voltage output, resulting in crisper throttle response and a smoother engine powerband. The CDI method, capacity discharge ignition, provides maximum voltage by transferring all stored energy in the capacitor to the ignition coil so that the ignition current can buildup quickly, thus making the Twin Power very effective in the higher revs where a normal spark would tend to diminish. This strong rapid spark prevents the high rpm ignition miss that reduces peak power. The transistorized method generates high voltage by using transistors to cut off current to the coil, thus allowing for a long energy discharge. This longer spark duration allows the Twin Power to improve lower RPM throttle response and torque. The combination of the CDI and the transistor method incorporates two distinct systems into one high performance unit, hence the designation of Twin Power. The Twin Power produces a spark output that is typically 1.5-2.5 stronger than of the stock ignition system and consumes about 35% less power input than other ignition amplifiers."
So those last two things there dont actually add HP but would take advantage of the HP increase of the exhaust/intake kits and would seem to have a great benefit. Sounds like if the car can have stronger responses in the RPM ranges plus more HP from "bigger lungs" than that would satisfy me.
add those intake and exhaust to the stock HP of about 147 and you end up with about 179. I dont know where you would get 20 more tho.
*I admittedly know little of cars and performance mods so hopefully im not terribly wrong with anything I said*
Stock HP ~147
~Racing beat exhaust: Downpipe, presilencer (pn 16209-$290-18hp gain on a 87RX-7) and Y-pipe and mufflers (pn 16420-$576-with a 5-7hp gain)
~HKS or K&N intake: Not sure which yet so no part number, but either should give appx 7 hp gain for about 180 bucks.
~Im looking into new flywheels as what I understand a better one would give me more response at lower RPMs and would mean faster shifting? which means quicker car.
~a Twin Power Rotary ignition amplifier from HKS: "The Twin Power ignition amplifier incorporates both the CDI and transistor method ignition to provide optimum spark duration and maximum voltage output, resulting in crisper throttle response and a smoother engine powerband. The CDI method, capacity discharge ignition, provides maximum voltage by transferring all stored energy in the capacitor to the ignition coil so that the ignition current can buildup quickly, thus making the Twin Power very effective in the higher revs where a normal spark would tend to diminish. This strong rapid spark prevents the high rpm ignition miss that reduces peak power. The transistorized method generates high voltage by using transistors to cut off current to the coil, thus allowing for a long energy discharge. This longer spark duration allows the Twin Power to improve lower RPM throttle response and torque. The combination of the CDI and the transistor method incorporates two distinct systems into one high performance unit, hence the designation of Twin Power. The Twin Power produces a spark output that is typically 1.5-2.5 stronger than of the stock ignition system and consumes about 35% less power input than other ignition amplifiers."
So those last two things there dont actually add HP but would take advantage of the HP increase of the exhaust/intake kits and would seem to have a great benefit. Sounds like if the car can have stronger responses in the RPM ranges plus more HP from "bigger lungs" than that would satisfy me.
add those intake and exhaust to the stock HP of about 147 and you end up with about 179. I dont know where you would get 20 more tho.
*I admittedly know little of cars and performance mods so hopefully im not terribly wrong with anything I said*
Last edited by Sartori; 01-05-05 at 11:41 AM.