sTOCK hp

[Doc-1]

Okay had the old girl Dyno=ed last night
The car is stock except for the 3 inch exhaust but it has a high flow cat, air pump with a stock air box, has 99 spec twins running in stock configuration

294 with 10 psi
314 with 12 psi

Not bad on pump gas

[GorillaRE]

hmmmm 294@10psi seems kind of high with those mods.... But congrats none the less!

-J

[Herblenny]

Doc, Great seeing you at the tuning session! And great numbers!

[dregg100]

and that was on a dynodynamics too!

[Brent]

Nice numbers!!

[Doc-1]

I was pleasantly surprised at the numbers myself I was looking for a max of 320 and thought I may get it. I think the red fd behind me got the same at 12 psi.

[dfoster154]

Seriously, all you have changed on this car is the exhaust?

[David Jerome]

I put down 292 at 8-9lbs on a dynojet about 5 years ago and everyone on the other forum called B.S. Car ran like 8.3-8.4 at around 84-85mph in the 1/8th on street tires which is pretty spot on for the hp :why:

Good numbers, these cars with just a full exhaust and 10lbs are a blast to drive.

[dfoster154]

RWHP? Only reason I ask is the FD (in US versions) came at 255hp at the flywheel stock, with a 10-8-10 boost pattern. I have a moderately Modded FD from 94 (PFC etc tuned by Steve Kan) and I am putting out 300rwhp on a dynodynamics tuned at 13PSI on the stocker twins. Check my introduction post, you will see my dyno sheet and mod list out

Not saying BS, just trying to understand the logic here

[Chadwick]

I would get 15 B.S. posts if I put this on the other forum; the reason for the good numbers are the 99 turbo's and a good tune. The abraded seals make them 10-15% more efficient at the same boost level. I can only guess that at some point some respected person on the other forum posted that the seals didn’t do anything and everyone jumped on the bandwagon, but I can tell you from experience that they do make a difference. I put down 315 rwhp at 10 psi, but my engine also has 9.7:1 compression rotors.

Dan

[Cp1]

Originally Posted by Chadwick

I would get 15 B.S. posts if I put this on the other forum; the reason for the good numbers are the 99 turbo's and a good tune. The abraded seals make them 10-15% more efficient at the same boost level. I can only guess that at some point some respected person on the other forum posted that the seals didn’t do anything and everyone jumped on the bandwagon, but I can tell you from experience that they do make a difference. I put down 315 rwhp at 10 psi, but my engine also has 9.7:1 compression rotors.

Dan

reduced clearances do indeed make a huge flow difference on turbos like rad fans. those 99 turbos flow a lot more air than stock because of those abraded seals. if anyone disagrees tell them to remove their radiator fan shroud and see how little air they move then!

[Signal 2]

Originally Posted by Cp1

reduced clearances do indeed make a huge flow difference on turbos like rad fans. those 99 turbos flow a lot more air than stock because of those abraded seals. if anyone disagrees tell them to remove their radiator fan shroud and see how little air they move then!

They're more efficient.....yes. Quicker spool...OK. But at a given pressure and at given intake temp...say stock boost levels.....10 psi is still 10 psi isn't it? No difference in max hp at the dyno. Or am I missing something?

[David Jerome]

Originally Posted by dfoster154

RWHP? Only reason I ask is the FD (in US versions) came at 255hp at the flywheel stock, with a 10-8-10 boost pattern. I have a moderately Modded FD from 94 (PFC etc tuned by Steve Kan) and I am putting out 300rwhp on a dynodynamics tuned at 13PSI on the stocker twins. Check my introduction post, you will see my dyno sheet and mod list out

Not saying BS, just trying to understand the logic here

Yes 292 RWHP . I have a decent bit of experience in modifying stock twin fds. Most of the bolt ons dont do anything performance wise for you. The exhaust is the big gainer, IC makes a difference in warmer temps but a nice cold day the factory SMIC is actually rather adequate up to around 12lbs on the stockers. I have seen numerous fds with exhaust only run in the 8.2-8.5 range in the 1/8th. We are talking stock filter but with the air pump deleted(8lbs saving )

Throw a 3" exhaust on a fd and a pettit remapped ecu and at 12lbs you are pretty much guaranteed 315-325 rwhp on a dynojet. Throwing every bolt on at a stock twin car is pointless. Full exhaust, nice IC, and pettit remap ecu with a $80.00 walbro pump is an excellent setup for anyone wanting a reliable 300rwhp setup that will run high-mid 12s with a good driver. I dont really understand why so many people go PFC that stay at 12lbs or less. I am going to do some testing soon and see how a fd reacts with Strong Apex seals, pettit ecu, meth injection, stock injectors at around 14-15lbs. I imagine around 340 rwhp should be obtain and it "should" be reliable.

[dfoster154]

hmmmm I wonder what forum that would be...
That's interesting to hear. I knew the '99 spec turbos were better from a quality perspective, but never read or heard the seals made a difference.
Shoot if that is the case, I will put '99 turbos on the list if/when my stockers go. Much cheaper than BNRs... (of course the BNRs will allow for more mods).

[sk8world]

[QUOTE=Doc-1;74639]Okay had the old girl Dyno=ed last night
The car is stock except for the 3 inch exhaust but it has a high flow cat, air pump with a stock air box, has 99 spec twins running in stock configuration


Dont forget the Mazdaspeed IC and most important of all "Ray Wilson" tuned.

I find these numbers close. I made 323 at 13-14psi (creep) on a old stock motor with basic bolt ons. And these numbers were on a dynodynamics unit but converted to dynojet numbers.