As the title states. Car is an '86, ~45k on the odometer. Stock k26-6. Only things done to the car would be an autothority MAF and chips, and LBE. the MAF and chips were actually done by my father in the mid 1990s, although the MAF unit itself i recently replaced when the old one broke. calibration is the same. The car gets around nicely, I think it's on like 14 psi? But of course that drops towards redline. I just want more power now. As a starting point, I've thought of getting rid of the stock cat, and switching the stock wastegate for an aftermarket unit (i think Tial are popular?). What's the limits of the k26-6? Also, if i'm not mistaken, don't the chips need to be tuned for the specific injector size, maf, and turbo?

any suggestions or comments are welcome. basically just suppose i was taking a stock '86 and was trying to get somewhere in the ballpark of 300-350whp. what would need to be done.

 

Join the local Porsche guys in Houston, in the PCA club there? Several members here are there with some nicely equipped cars. Get rid of the APE chips, get the Vitesse chipboard for the K26, 3" exhaust, DP wastegate (Tial or LR), run 15 psi with MBC and IIRC, cars were putting down 245/275 respectively with that combo.

 

One thing i want to avoid is having to get new chips every time i mod the car. Like, if i were to upgrade to a k26-8 or k27-6/8 or any other turbo, i would need new chips for that turbo's response time right? and i know vitesse chips are the best, but in lindsey racings 951maxx chips are a suitable alternate, no?

also, i'm basically stuck with 1 price range for a 3'' exhuast right? seems like all vendors are selling the downtube for $600. is the stock size really that restrictive?

 

Well, talk to John about the chipboard to see how the switches can be changed with what upgrades for the future, that's the beauty of that.

Yes it is...if you want some better flow, well you have to open it up a bit, but once you do that, it's done - it's done. If it's a $$ funding issue, save to do it right the first time.

 

The Vitesse MAF and chip board will handle virtually an mods you will make. I have run my car from 300 rwhp to 500 rwhp without changing any of the Vitesse engine management...

 

and alternative chips/mafs won't do the same? like lindsey's stuff?

hp is not cheap for these cars. lol. especially coming from an ls1 f-body. the idea of spending 1300 on just chips/maf makes me scratch my head a little.

can the k26/8 maintain 15psi to redline? i know the k26/6 drops down to ~10-12psi i think... If i wanted to swap in a k26/8 to run ~15psi, would i need larger injectors? Also, while the 951maxx chips might not offer the flexibility of the Vitesse, that is not to say they are bad chips, right? If i knew exactly what mods i was going to make, and had a chip tuned for that, would it not be acceptable? I know this APE tune is outdated now.

 

I have a LBE for sale as well as wastegate shims if your looking for ungodly cheap hp, I may even have autothority stage 2 chips for sale (28pin)

 

It's been mentioned several times...Vitesse chipboard...hp is not cheap for these cars Done Right. There is a difference.

 

The Maxtune Pro kit from maxhpkit.com will get you where you want for less. Not as flexible but still very good.

 

Are you using the LBE to raise your boost level?

 

you'll pick up at least 15-20 hp over stock by running a testpipe by running a hollow chamber resonator and either a borla or hooker maxflow. they sound perrrty good too.





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Lindsey Racing's having an exhaust sale right now. Might be worthwhile checking out.

 

looks like LR's sale is only on 4'' stuff? They're listing 3'' steel as having 10% off but I don't see the discount on the product page...

 

too bad your in Houston or I'd take ya' for a ride in mine...I think you'd be shocked at how hard it runs with very few mods. I pulled (barely) a 2010 Camaro SS with a manual 6 speed from a roll (one of our techs)...he was pissed I made a SRT-8 Charger look stoooopid from an 80mph roll last Saturday (not saying much though).

140k w/stock turbo (engine freshened around 90k). Again stock turbo, 17#'s boost, 3" exhaust (used off EBay), test pipe, Lindsey Maxx chipset, adj. boost controller, NO MAF conversion yet and not sure if it's needed with the airflow of the stock turbo...oops, the few parts I have are listed in my sig!

Serious, it runs really hard! When I had 245/45/16's it was barking third gear nicely

Have fun!

 

Hmm, I was always under the impression that the stock k26/6 couldn't do anymore than like 16psi. That's the general power range i want to be in though.

Also, anyone have any experience with Russell Berry's Multi-Board DME chip? Same guy that sells the 951MAX chips if I'm not mistaken. All I'm looking for, in terms of chips, is something that has a better a/f line than the APE, which is said to run really lean in the higher RPMs. It's a street driven car, so I don't need, nor want to pay, for 100% efficiency. If his stuff will be 90% as good (which is probably still 100% better then these old APE tunes) then that's fine.