Billy W

I think that the boost # from the dyno is closer to what you had versus the 17-18 that you thought. I pulled 240rwhp with a very early version (1.6 I think) of Dan's chips at 16psi on a stock 86.

jimbo1111

Posted by NZ951: It showed me pulling 315...

315 what? RWHP or crank hp. With a k26?

Pauerman

If these runs were done on your '89, I think there must be something wrong.

With Guru chips, LBE, shimmed WG & full SFR exhaust, I put down 273 whp and 322 lb/ft @ 1.2 bar.

With my MAP kit, better A/F, & Greddy BC my car made 280 whp and 290 lb/ft @ 1 bar.

These runs were made with my K26/8 on a Dynojet 248C at Technodyne.

See if your conversion will come up with similar numbers. I don't think I'm the only one with these kind of results from an '89

Vic

Jake951

My '89 did 270 hp/280 ft-lb on a Dynojet 248 with the Guru MAP kit, but the boost was dropping to 13 psi at redline. The stock wastegate was shimmed but still won't hold full boost to redline.

I'm about to put in the Guru WG with 55 lb/hr injectors and the 18 psi chips, so we'll see shortly what that does for me.

alpenweissisnice

I have had my car dyno'd on both a Dyno Dynamics and a Mustang; both runs were very close. I understand the correction factor for both of the above dynos versus a DynoJet is right at 14%. I run Steve R chips and am supposed be getting around 230 hp at the wheels ON A DYNOJET. I got 202 average at the wheels on both the Mustang and the Dyno Dynamics; corrected at 14% that number is...230. I feel that correction factor is just about right

NZ951

Yup, RWHP with a K26... as most of you know I have a few more goodies to go in and will do another dyno run in a month or so when my moding phase has clamed down a bit...

jimbo1111

So your saying you put down 315 rwhp with a k26/6 at 1 bar 14psi. Care to share a dyno chart. I think that would be a record of some kind. I'm not saying it's not possible. I would just like to compare it to my own.

pk951

It would be interesting to see the dyno chart for that one?

Plus at 14psi that would be some kind of record with a 26/6.

Danno

richmason, you're correct. You get a $250 discount off the MAP upgrades with a previous chip-kit purchase. I send out specific chips for your car with the MAP upgrade, and you send back the AFM chips

"Plus at 14psi that would be some kind of record with a 26/6."

Hmmm, power is determined by air-volume ingested. The boost is an indication of restrictions in the intake, heads, exhaust.etc. So to get enough air to flow for 315rwhp @ 14.5psi, then we're looking at some serious head work with major porting & polishing. And cam and cam-timing as well. The bottom line is you have to flow in enough CFM of air to generate that power.

westcoastprshe

NZ: are you putting down that 315HP with a stock wastegate? I don't see a new one listed in your mods.

*edit* I see that it's shimmed now. I have serious doubts that a car with a 26/6 can put down 315HP at 1bar. Maybe the air is thicker down there in NZ.

facboy

otay, well i showed danno the detailed table with afr/psi etc every 2kph and he says i can definitely run higher boost than atm. so maybe i will crank it up a little and see. i'm a little concerned about getting higher boost in 5th than i do in 4th - bit hard to check while flying down the road, but it seemed to spike a little higher in 5th (maybe i should have got a dyno run done in 5th as well).

NZ951

I have gone through this before, ummmm I am about 20m above sea level here! 14.5psi actually... My car is not stock, this took a total of 8 hours on the dyno to achieve. I have a Tial, Siemens 850cc, 60-1 stage 3, blah blah to install in the coming weeks. I will dyno it again then and ensure I get the charts to post, I dont have any of the last run. I did not think it would have been that important to keep!

facboy

hee hee, redynoed again today, with boost slightly higher. dyno guy heard very slight knocking (like a couple of rattles, and then the timing would retard and it would be fine) running in 5th gear at 5000rpm. it was holding 17psi boost at that level. i've turned it back down to the previous level to be safe, where it now holds 16psi at 5000rpm. hmm...now that i look at the dyno graph, there's a slight dip in the power curve right around the 5000rpm mark...maybe it was retarding slightly there?

out of interest, anybody (possibly danno ) know what boost danno mapped the guru chips for at 5000 rpm?

facboy

hum...did another dyno run today after fixing vacuum leaks, peaks at 18psi, falling to 13 at redline (!), where AFR is a nice 11.8 which is pretty cool.

but...dyno guy says there is still some slight detonation in the mid-range, again a couple of rattles (literally) and then nothing. it did this boosting to 16.5psi, and the same thing at 18. he thinks it is the knock-sensor doing its job, ie it has a bash, goes 'oops', and dials it back a bit. he says its no big problem, the dyno curves don't show any evidence of detonation, etc.

is this what is meant to happen with guru chips? any thoughts? danno?

slim_boy_fat

Its 315hp DIN corrected, thats not wheel thats crank.

Equates to about 267whp which is still pretty handy for a 26/6 for sure...